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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / tlan.c
blob0166407d7061b417f9d4276dfea49b15043ee39a
1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** This file is best viewed/edited with columns>=132.
17 *
18 ** Useful (if not required) reading:
19 *
20 * Texas Instruments, ThunderLAN Programmer's Guide,
21 * TI Literature Number SPWU013A
22 * available in PDF format from www.ti.com
23 * Level One, LXT901 and LXT970 Data Sheets
24 * available in PDF format from www.level1.com
25 * National Semiconductor, DP83840A Data Sheet
26 * available in PDF format from www.national.com
27 * Microchip Technology, 24C01A/02A/04A Data Sheet
28 * available in PDF format from www.microchip.com
29 *
30 * Change History
31 *
32 * Tigran Aivazian <tigran@sco.com>: TLan_PciProbe() now uses
33 * new PCI BIOS interface.
34 * Alan Cox <alan@redhat.com>: Fixed the out of memory
35 * handling.
36 *
37 * Torben Mathiasen <torben.mathiasen@compaq.com> New Maintainer!
38 *
39 * v1.1 Dec 20, 1999 - Removed linux version checking
40 * Patch from Tigran Aivazian.
41 * - v1.1 includes Alan's SMP updates.
42 * - We still have problems on SMP though,
43 * but I'm looking into that.
44 *
45 * v1.2 Jan 02, 2000 - Hopefully fixed the SMP deadlock.
46 * - Removed dependency of HZ being 100.
47 * - We now allow higher priority timers to
48 * overwrite timers like TLAN_TIMER_ACTIVITY
49 * Patch from John Cagle <john.cagle@compaq.com>.
50 * - Fixed a few compiler warnings.
51 *
52 * v1.3 Feb 04, 2000 - Fixed the remaining HZ issues.
53 * - Removed call to pci_present().
54 * - Removed SA_INTERRUPT flag from irq handler.
55 * - Added __init and __initdata to reduce resisdent
56 * code size.
57 * - Driver now uses module_init/module_exit.
58 * - Rewrote init_module and tlan_probe to
59 * share a lot more code. We now use tlan_probe
60 * with builtin and module driver.
61 * - Driver ported to new net API.
62 * - tlan.txt has been reworked to reflect current
63 * driver (almost)
64 * - Other minor stuff
65 *
66 * v1.4 Feb 10, 2000 - Updated with more changes required after Dave's
67 * network cleanup in 2.3.43pre7 (Tigran & myself)
68 * - Minor stuff.
69 *
70 * v1.5 March 22, 2000 - Fixed another timer bug that would hang the driver
71 * if no cable/link were present.
72 * - Cosmetic changes.
73 * - TODO: Port completely to new PCI/DMA API
74 * Auto-Neg fallback.
75 *
76 * v1.6 April 04, 2000 - Fixed driver support for kernel-parameters. Haven't
77 * tested it though, as the kernel support is currently
78 * broken (2.3.99p4p3).
79 * - Updated tlan.txt accordingly.
80 * - Adjusted minimum/maximum frame length.
81 * - There is now a TLAN website up at
82 * http://tlan.kernel.dk
83 *
84 * v1.7 April 07, 2000 - Started to implement custom ioctls. Driver now
85 * reports PHY information when used with Donald
86 * Beckers userspace MII diagnostics utility.
87 *
88 * v1.8 April 23, 2000 - Fixed support for forced speed/duplex settings.
89 * - Added link information to Auto-Neg and forced
90 * modes. When NIC operates with auto-neg the driver
91 * will report Link speed & duplex modes as well as
92 * link partner abilities. When forced link is used,
93 * the driver will report status of the established
94 * link.
95 * Please read tlan.txt for additional information.
96 * - Removed call to check_region(), and used
97 * return value of request_region() instead.
98 *
99 * v1.8a May 28, 2000 - Minor updates.
100 *
101 * v1.9 July 25, 2000 - Fixed a few remaining Full-Duplex issues.
102 * - Updated with timer fixes from Andrew Morton.
103 * - Fixed module race in TLan_Open.
104 * - Added routine to monitor PHY status.
105 * - Added activity led support for Proliant devices.
106 *
107 * v1.10 Aug 30, 2000 - Added support for EISA based tlan controllers
108 * like the Compaq NetFlex3/E.
109 * - Rewrote tlan_probe to better handle multiple
110 * bus probes. Probing and device setup is now
111 * done through TLan_Probe and TLan_init_one. Actual
112 * hardware probe is done with kernel API and
113 * TLan_EisaProbe.
114 * - Adjusted debug information for probing.
115 * - Fixed bug that would cause general debug information
116 * to be printed after driver removal.
117 * - Added transmit timeout handling.
118 * - Fixed OOM return values in tlan_probe.
119 * - Fixed possible mem leak in tlan_exit
120 * (now tlan_remove_one).
121 * - Fixed timer bug in TLan_phyMonitor.
122 * - This driver version is alpha quality, please
123 * send me any bug issues you may encounter.
124 *
125 * v1.11 Aug 31, 2000 - Do not try to register irq 0 if no irq line was
126 * set for EISA cards.
127 * - Added support for NetFlex3/E with nibble-rate
128 * 10Base-T PHY. This is untestet as I haven't got
129 * one of these cards.
130 * - Fixed timer being added twice.
131 * - Disabled PhyMonitoring by default as this is
132 * work in progress. Define MONITOR to enable it.
133 * - Now we don't display link info with PHYs that
134 * doesn't support it (level1).
135 * - Incresed tx_timeout beacuse of auto-neg.
136 * - Adjusted timers for forced speeds.
137 *
138 * v1.12 Oct 12, 2000 - Minor fixes (memleak, init, etc.)
139 *
140 * v1.13 Nov 28, 2000 - Stop flooding console with auto-neg issues
141 * when link can't be established.
142 * - Added the bbuf option as a kernel parameter.
143 * - Fixed ioaddr probe bug.
144 * - Fixed stupid deadlock with MII interrupts.
145 * - Added support for speed/duplex selection with
146 * multiple nics.
147 * - Added partly fix for TX Channel lockup with
148 * TLAN v1.0 silicon. This needs to be investigated
149 * further.
150 *
151 * v1.14 Dec 16, 2000 - Added support for servicing multiple frames per.
152 * interrupt. Thanks goes to
153 * Adam Keys <adam@ti.com>
154 * Denis Beaudoin <dbeaudoin@ti.com>
155 * for providing the patch.
156 * - Fixed auto-neg output when using multiple
157 * adapters.
158 * - Converted to use new taskq interface.
159 *
160 * v1.14a Jan 6, 2001 - Minor adjustments (spinlocks, etc.)
161 *
162 * Samuel Chessman <chessman@tux.org> New Maintainer!
163 *
164 * v1.15 Apr 4, 2002 - Correct operation when aui=1 to be
165 * 10T half duplex no loopback
166 * Thanks to Gunnar Eikman
167 *******************************************************************************/
168
169 #include <linux/module.h>
170 #include <linux/init.h>
171 #include <linux/ioport.h>
172 #include <linux/eisa.h>
173 #include <linux/pci.h>
174 #include <linux/dma-mapping.h>
175 #include <linux/netdevice.h>
176 #include <linux/etherdevice.h>
177 #include <linux/delay.h>
178 #include <linux/spinlock.h>
179 #include <linux/workqueue.h>
180 #include <linux/mii.h>
181
182 #include "tlan.h"
183
184 typedef u32 (TLanIntVectorFunc)( struct net_device *, u16 );
185
186
187 /* For removing EISA devices */
188 static struct net_device *TLan_Eisa_Devices;
189
190 static int TLanDevicesInstalled;
191
192 /* Set speed, duplex and aui settings */
193 static int aui[MAX_TLAN_BOARDS];
194 static int duplex[MAX_TLAN_BOARDS];
195 static int speed[MAX_TLAN_BOARDS];
196 static int boards_found;
197 module_param_array(aui, int, NULL, 0);
198 module_param_array(duplex, int, NULL, 0);
199 module_param_array(speed, int, NULL, 0);
200 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
201 MODULE_PARM_DESC(duplex, "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
202 MODULE_PARM_DESC(speed, "ThunderLAN port speen setting(s) (0,10,100)");
203
204 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
205 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
206 MODULE_LICENSE("GPL");
207
208
209 /* Define this to enable Link beat monitoring */
210 #undef MONITOR
211
212 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
213 static int debug;
214 module_param(debug, int, 0);
215 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
216
217 static int bbuf;
218 module_param(bbuf, int, 0);
219 MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
220
221 static u8 *TLanPadBuffer;
222 static dma_addr_t TLanPadBufferDMA;
223 static char TLanSignature[] = "TLAN";
224 static const char tlan_banner[] = "ThunderLAN driver v1.15\n";
225 static int tlan_have_pci;
226 static int tlan_have_eisa;
227
228 static const char *media[] = {
229 "10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ",
230 "100baseTx-FD", "100baseT4", NULL
231 };
232
233 static struct board {
234 const char *deviceLabel;
235 u32 flags;
236 u16 addrOfs;
237 } board_info[] = {
238 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
239 { "Compaq Netelligent 10/100 TX PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
240 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
241 { "Compaq NetFlex-3/P", TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
242 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
243 { "Compaq Netelligent Integrated 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
244 { "Compaq Netelligent Dual 10/100 TX PCI UTP", TLAN_ADAPTER_NONE, 0x83 },
245 { "Compaq Netelligent 10/100 TX Embedded UTP", TLAN_ADAPTER_NONE, 0x83 },
246 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
247 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xF8 },
248 { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xF8 },
249 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
250 { "Compaq Netelligent 10 T/2 PCI UTP/Coax", TLAN_ADAPTER_NONE, 0x83 },
251 { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
252 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
253 { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
254 };
255
256 static struct pci_device_id tlan_pci_tbl[] = {
257 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
258 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
259 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
260 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
261 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
262 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
263 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
264 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
265 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
266 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
267 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
268 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
269 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
270 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
271 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
272 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
273 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
274 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
275 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
276 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
277 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
278 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
279 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
280 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
281 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
282 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
283 { 0,}
284 };
285 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
286
287 static void TLan_EisaProbe( void );
288 static void TLan_Eisa_Cleanup( void );
289 static int TLan_Init( struct net_device * );
290 static int TLan_Open( struct net_device *dev );
291 static int TLan_StartTx( struct sk_buff *, struct net_device *);
292 static irqreturn_t TLan_HandleInterrupt( int, void *);
293 static int TLan_Close( struct net_device *);
294 static struct net_device_stats *TLan_GetStats( struct net_device *);
295 static void TLan_SetMulticastList( struct net_device *);
296 static int TLan_ioctl( struct net_device *dev, struct ifreq *rq, int cmd);
297 static int TLan_probe1( struct pci_dev *pdev, long ioaddr, int irq, int rev, const struct pci_device_id *ent);
298 static void TLan_tx_timeout( struct net_device *dev);
299 static void TLan_tx_timeout_work(struct work_struct *work);
300 static int tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);
301
302 static u32 TLan_HandleInvalid( struct net_device *, u16 );
303 static u32 TLan_HandleTxEOF( struct net_device *, u16 );
304 static u32 TLan_HandleStatOverflow( struct net_device *, u16 );
305 static u32 TLan_HandleRxEOF( struct net_device *, u16 );
306 static u32 TLan_HandleDummy( struct net_device *, u16 );
307 static u32 TLan_HandleTxEOC( struct net_device *, u16 );
308 static u32 TLan_HandleStatusCheck( struct net_device *, u16 );
309 static u32 TLan_HandleRxEOC( struct net_device *, u16 );
310
311 static void TLan_Timer( unsigned long );
312
313 static void TLan_ResetLists( struct net_device * );
314 static void TLan_FreeLists( struct net_device * );
315 static void TLan_PrintDio( u16 );
316 static void TLan_PrintList( TLanList *, char *, int );
317 static void TLan_ReadAndClearStats( struct net_device *, int );
318 static void TLan_ResetAdapter( struct net_device * );
319 static void TLan_FinishReset( struct net_device * );
320 static void TLan_SetMac( struct net_device *, int areg, char *mac );
321
322 static void TLan_PhyPrint( struct net_device * );
323 static void TLan_PhyDetect( struct net_device * );
324 static void TLan_PhyPowerDown( struct net_device * );
325 static void TLan_PhyPowerUp( struct net_device * );
326 static void TLan_PhyReset( struct net_device * );
327 static void TLan_PhyStartLink( struct net_device * );
328 static void TLan_PhyFinishAutoNeg( struct net_device * );
329 #ifdef MONITOR
330 static void TLan_PhyMonitor( struct net_device * );
331 #endif
332
333 /*
334 static int TLan_PhyNop( struct net_device * );
335 static int TLan_PhyInternalCheck( struct net_device * );
336 static int TLan_PhyInternalService( struct net_device * );
337 static int TLan_PhyDp83840aCheck( struct net_device * );
338 */
339
340 static int TLan_MiiReadReg( struct net_device *, u16, u16, u16 * );
341 static void TLan_MiiSendData( u16, u32, unsigned );
342 static void TLan_MiiSync( u16 );
343 static void TLan_MiiWriteReg( struct net_device *, u16, u16, u16 );
344
345 static void TLan_EeSendStart( u16 );
346 static int TLan_EeSendByte( u16, u8, int );
347 static void TLan_EeReceiveByte( u16, u8 *, int );
348 static int TLan_EeReadByte( struct net_device *, u8, u8 * );
349
350
351 static void
352 TLan_StoreSKB( struct tlan_list_tag *tag, struct sk_buff *skb)
353 {
354 unsigned long addr = (unsigned long)skb;
355 tag->buffer[9].address = (u32)addr;
356 addr >>= 31; /* >>= 32 is undefined for 32bit arch, stupid C */
357 addr >>= 1;
358 tag->buffer[8].address = (u32)addr;
359 }
360
361 static struct sk_buff *
362 TLan_GetSKB( struct tlan_list_tag *tag)
363 {
364 unsigned long addr = tag->buffer[8].address;
365 addr <<= 31;
366 addr <<= 1;
367 addr |= tag->buffer[9].address;
368 return (struct sk_buff *) addr;
369 }
370
371
372 static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
373 TLan_HandleInvalid,
374 TLan_HandleTxEOF,
375 TLan_HandleStatOverflow,
376 TLan_HandleRxEOF,
377 TLan_HandleDummy,
378 TLan_HandleTxEOC,
379 TLan_HandleStatusCheck,
380 TLan_HandleRxEOC
381 };
382
383 static inline void
384 TLan_SetTimer( struct net_device *dev, u32 ticks, u32 type )
385 {
386 TLanPrivateInfo *priv = netdev_priv(dev);
387 unsigned long flags = 0;
388
389 if (!in_irq())
390 spin_lock_irqsave(&priv->lock, flags);
391 if ( priv->timer.function != NULL &&
392 priv->timerType != TLAN_TIMER_ACTIVITY ) {
393 if (!in_irq())
394 spin_unlock_irqrestore(&priv->lock, flags);
395 return;
396 }
397 priv->timer.function = &TLan_Timer;
398 if (!in_irq())
399 spin_unlock_irqrestore(&priv->lock, flags);
400
401 priv->timer.data = (unsigned long) dev;
402 priv->timerSetAt = jiffies;
403 priv->timerType = type;
404 mod_timer(&priv->timer, jiffies + ticks);
405
406 } /* TLan_SetTimer */
407
408
409 /*****************************************************************************
410 ******************************************************************************
411
412 ThunderLAN Driver Primary Functions
413
414 These functions are more or less common to all Linux network drivers.
415
416 ******************************************************************************
417 *****************************************************************************/
418
419
420
421
422
423 /***************************************************************
424 * tlan_remove_one
425 *
426 * Returns:
427 * Nothing
428 * Parms:
429 * None
430 *
431 * Goes through the TLanDevices list and frees the device
432 * structs and memory associated with each device (lists
433 * and buffers). It also ureserves the IO port regions
434 * associated with this device.
435 *
436 **************************************************************/
437
438
439 static void __devexit tlan_remove_one( struct pci_dev *pdev)
440 {
441 struct net_device *dev = pci_get_drvdata( pdev );
442 TLanPrivateInfo *priv = netdev_priv(dev);
443
444 unregister_netdev( dev );
445
446 if ( priv->dmaStorage ) {
447 pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage, priv->dmaStorageDMA );
448 }
449
450 #ifdef CONFIG_PCI
451 pci_release_regions(pdev);
452 #endif
453
454 free_netdev( dev );
455
456 pci_set_drvdata( pdev, NULL );
457 }
458
459 static struct pci_driver tlan_driver = {
460 .name = "tlan",
461 .id_table = tlan_pci_tbl,
462 .probe = tlan_init_one,
463 .remove = __devexit_p(tlan_remove_one),
464 };
465
466 static int __init tlan_probe(void)
467 {
468 int rc = -ENODEV;
469
470 printk(KERN_INFO "%s", tlan_banner);
471
472 TLanPadBuffer = (u8 *) pci_alloc_consistent(NULL, TLAN_MIN_FRAME_SIZE, &TLanPadBufferDMA);
473
474 if (TLanPadBuffer == NULL) {
475 printk(KERN_ERR "TLAN: Could not allocate memory for pad buffer.\n");
476 rc = -ENOMEM;
477 goto err_out;
478 }
479
480 memset(TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE);
481
482 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
483
484 /* Use new style PCI probing. Now the kernel will
485 do most of this for us */
486 rc = pci_register_driver(&tlan_driver);
487
488 if (rc != 0) {
489 printk(KERN_ERR "TLAN: Could not register pci driver.\n");
490 goto err_out_pci_free;
491 }
492
493 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
494 TLan_EisaProbe();
495
496 printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d EISA: %d\n",
497 TLanDevicesInstalled, TLanDevicesInstalled == 1 ? "" : "s",
498 tlan_have_pci, tlan_have_eisa);
499
500 if (TLanDevicesInstalled == 0) {
501 rc = -ENODEV;
502 goto err_out_pci_unreg;
503 }
504 return 0;
505
506 err_out_pci_unreg:
507 pci_unregister_driver(&tlan_driver);
508 err_out_pci_free:
509 pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
510 err_out:
511 return rc;
512 }
513
514
515 static int __devinit tlan_init_one( struct pci_dev *pdev,
516 const struct pci_device_id *ent)
517 {
518 return TLan_probe1( pdev, -1, -1, 0, ent);
519 }
520
521
522 /*
523 ***************************************************************
524 * tlan_probe1
525 *
526 * Returns:
527 * 0 on success, error code on error
528 * Parms:
529 * none
530 *
531 * The name is lower case to fit in with all the rest of
532 * the netcard_probe names. This function looks for
533 * another TLan based adapter, setting it up with the
534 * allocated device struct if one is found.
535 * tlan_probe has been ported to the new net API and
536 * now allocates its own device structure. This function
537 * is also used by modules.
538 *
539 **************************************************************/
540
541 static int __devinit TLan_probe1(struct pci_dev *pdev,
542 long ioaddr, int irq, int rev, const struct pci_device_id *ent )
543 {
544
545 struct net_device *dev;
546 TLanPrivateInfo *priv;
547 u16 device_id;
548 int reg, rc = -ENODEV;
549
550 #ifdef CONFIG_PCI
551 if (pdev) {
552 rc = pci_enable_device(pdev);
553 if (rc)
554 return rc;
555
556 rc = pci_request_regions(pdev, TLanSignature);
557 if (rc) {
558 printk(KERN_ERR "TLAN: Could not reserve IO regions\n");
559 goto err_out;
560 }
561 }
562 #endif /* CONFIG_PCI */
563
564 dev = alloc_etherdev(sizeof(TLanPrivateInfo));
565 if (dev == NULL) {
566 printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
567 rc = -ENOMEM;
568 goto err_out_regions;
569 }
570 SET_NETDEV_DEV(dev, &pdev->dev);
571
572 priv = netdev_priv(dev);
573
574 priv->pciDev = pdev;
575 priv->dev = dev;
576
577 /* Is this a PCI device? */
578 if (pdev) {
579 u32 pci_io_base = 0;
580
581 priv->adapter = &board_info[ent->driver_data];
582
583 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
584 if (rc) {
585 printk(KERN_ERR "TLAN: No suitable PCI mapping available.\n");
586 goto err_out_free_dev;
587 }
588
589 for ( reg= 0; reg <= 5; reg ++ ) {
590 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
591 pci_io_base = pci_resource_start(pdev, reg);
592 TLAN_DBG( TLAN_DEBUG_GNRL, "IO mapping is available at %x.\n",
593 pci_io_base);
594 break;
595 }
596 }
597 if (!pci_io_base) {
598 printk(KERN_ERR "TLAN: No IO mappings available\n");
599 rc = -EIO;
600 goto err_out_free_dev;
601 }
602
603 dev->base_addr = pci_io_base;
604 dev->irq = pdev->irq;
605 priv->adapterRev = pdev->revision;
606 pci_set_master(pdev);
607 pci_set_drvdata(pdev, dev);
608
609 } else { /* EISA card */
610 /* This is a hack. We need to know which board structure
611 * is suited for this adapter */
612 device_id = inw(ioaddr + EISA_ID2);
613 priv->is_eisa = 1;
614 if (device_id == 0x20F1) {
615 priv->adapter = &board_info[13]; /* NetFlex-3/E */
616 priv->adapterRev = 23; /* TLAN 2.3 */
617 } else {
618 priv->adapter = &board_info[14];
619 priv->adapterRev = 10; /* TLAN 1.0 */
620 }
621 dev->base_addr = ioaddr;
622 dev->irq = irq;
623 }
624
625 /* Kernel parameters */
626 if (dev->mem_start) {
627 priv->aui = dev->mem_start & 0x01;
628 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 : (dev->mem_start & 0x06) >> 1;
629 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0 : (dev->mem_start & 0x18) >> 3;
630
631 if (priv->speed == 0x1) {
632 priv->speed = TLAN_SPEED_10;
633 } else if (priv->speed == 0x2) {
634 priv->speed = TLAN_SPEED_100;
635 }
636 debug = priv->debug = dev->mem_end;
637 } else {
638 priv->aui = aui[boards_found];
639 priv->speed = speed[boards_found];
640 priv->duplex = duplex[boards_found];
641 priv->debug = debug;
642 }
643
644 /* This will be used when we get an adapter error from
645 * within our irq handler */
646 INIT_WORK(&priv->tlan_tqueue, TLan_tx_timeout_work);
647
648 spin_lock_init(&priv->lock);
649
650 rc = TLan_Init(dev);
651 if (rc) {
652 printk(KERN_ERR "TLAN: Could not set up device.\n");
653 goto err_out_free_dev;
654 }
655
656 rc = register_netdev(dev);
657 if (rc) {
658 printk(KERN_ERR "TLAN: Could not register device.\n");
659 goto err_out_uninit;
660 }
661
662
663 TLanDevicesInstalled++;
664 boards_found++;
665
666 /* pdev is NULL if this is an EISA device */
667 if (pdev)
668 tlan_have_pci++;
669 else {
670 priv->nextDevice = TLan_Eisa_Devices;
671 TLan_Eisa_Devices = dev;
672 tlan_have_eisa++;
673 }
674
675 printk(KERN_INFO "TLAN: %s irq=%2d, io=%04x, %s, Rev. %d\n",
676 dev->name,
677 (int) dev->irq,
678 (int) dev->base_addr,
679 priv->adapter->deviceLabel,
680 priv->adapterRev);
681 return 0;
682
683 err_out_uninit:
684 pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage,
685 priv->dmaStorageDMA );
686 err_out_free_dev:
687 free_netdev(dev);
688 err_out_regions:
689 #ifdef CONFIG_PCI
690 if (pdev)
691 pci_release_regions(pdev);
692 #endif
693 err_out:
694 if (pdev)
695 pci_disable_device(pdev);
696 return rc;
697 }
698
699
700 static void TLan_Eisa_Cleanup(void)
701 {
702 struct net_device *dev;
703 TLanPrivateInfo *priv;
704
705 while( tlan_have_eisa ) {
706 dev = TLan_Eisa_Devices;
707 priv = netdev_priv(dev);
708 if (priv->dmaStorage) {
709 pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage, priv->dmaStorageDMA );
710 }
711 release_region( dev->base_addr, 0x10);
712 unregister_netdev( dev );
713 TLan_Eisa_Devices = priv->nextDevice;
714 free_netdev( dev );
715 tlan_have_eisa--;
716 }
717 }
718
719
720 static void __exit tlan_exit(void)
721 {
722 pci_unregister_driver(&tlan_driver);
723
724 if (tlan_have_eisa)
725 TLan_Eisa_Cleanup();
726
727 pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
728
729 }
730
731
732 /* Module loading/unloading */
733 module_init(tlan_probe);
734 module_exit(tlan_exit);
735
736
737
738 /**************************************************************
739 * TLan_EisaProbe
740 *
741 * Returns: 0 on success, 1 otherwise
742 *
743 * Parms: None
744 *
745 *
746 * This functions probes for EISA devices and calls
747 * TLan_probe1 when one is found.
748 *
749 *************************************************************/
750
751 static void __init TLan_EisaProbe (void)
752 {
753 long ioaddr;
754 int rc = -ENODEV;
755 int irq;
756 u16 device_id;
757
758 if (!EISA_bus) {
759 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
760 return;
761 }
762
763 /* Loop through all slots of the EISA bus */
764 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
765
766 TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC80, inw(ioaddr + EISA_ID));
767 TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC82, inw(ioaddr + EISA_ID2));
768
769
770 TLAN_DBG(TLAN_DEBUG_PROBE, "Probing for EISA adapter at IO: 0x%4x : ",
771 (int) ioaddr);
772 if (request_region(ioaddr, 0x10, TLanSignature) == NULL)
773 goto out;
774
775 if (inw(ioaddr + EISA_ID) != 0x110E) {
776 release_region(ioaddr, 0x10);
777 goto out;
778 }
779
780 device_id = inw(ioaddr + EISA_ID2);
781 if (device_id != 0x20F1 && device_id != 0x40F1) {
782 release_region (ioaddr, 0x10);
783 goto out;
784 }
785
786 if (inb(ioaddr + EISA_CR) != 0x1) { /* Check if adapter is enabled */
787 release_region (ioaddr, 0x10);
788 goto out2;
789 }
790
791 if (debug == 0x10)
792 printk("Found one\n");
793
794
795 /* Get irq from board */
796 switch (inb(ioaddr + 0xCC0)) {
797 case(0x10):
798 irq=5;
799 break;
800 case(0x20):
801 irq=9;
802 break;
803 case(0x40):
804 irq=10;
805 break;
806 case(0x80):
807 irq=11;
808 break;
809 default:
810 goto out;
811 }
812
813
814 /* Setup the newly found eisa adapter */
815 rc = TLan_probe1( NULL, ioaddr, irq,
816 12, NULL);
817 continue;
818
819 out:
820 if (debug == 0x10)
821 printk("None found\n");
822 continue;
823
824 out2: if (debug == 0x10)
825 printk("Card found but it is not enabled, skipping\n");
826 continue;
827
828 }
829
830 } /* TLan_EisaProbe */
831
832 #ifdef CONFIG_NET_POLL_CONTROLLER
833 static void TLan_Poll(struct net_device *dev)
834 {
835 disable_irq(dev->irq);
836 TLan_HandleInterrupt(dev->irq, dev);
837 enable_irq(dev->irq);
838 }
839 #endif
840
841
842
843
844 /***************************************************************
845 * TLan_Init
846 *
847 * Returns:
848 * 0 on success, error code otherwise.
849 * Parms:
850 * dev The structure of the device to be
851 * init'ed.
852 *
853 * This function completes the initialization of the
854 * device structure and driver. It reserves the IO
855 * addresses, allocates memory for the lists and bounce
856 * buffers, retrieves the MAC address from the eeprom
857 * and assignes the device's methods.
858 *
859 **************************************************************/
860
861 static int TLan_Init( struct net_device *dev )
862 {
863 int dma_size;
864 int err;
865 int i;
866 TLanPrivateInfo *priv;
867
868 priv = netdev_priv(dev);
869
870 if ( bbuf ) {
871 dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
872 * ( sizeof(TLanList) + TLAN_MAX_FRAME_SIZE );
873 } else {
874 dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
875 * ( sizeof(TLanList) );
876 }
877 priv->dmaStorage = pci_alloc_consistent(priv->pciDev, dma_size, &priv->dmaStorageDMA);
878 priv->dmaSize = dma_size;
879
880 if ( priv->dmaStorage == NULL ) {
881 printk(KERN_ERR "TLAN: Could not allocate lists and buffers for %s.\n",
882 dev->name );
883 return -ENOMEM;
884 }
885 memset( priv->dmaStorage, 0, dma_size );
886 priv->rxList = (TLanList *)
887 ( ( ( (u32) priv->dmaStorage ) + 7 ) & 0xFFFFFFF8 );
888 priv->rxListDMA = ( ( ( (u32) priv->dmaStorageDMA ) + 7 ) & 0xFFFFFFF8 );
889 priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
890 priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS;
891 if ( bbuf ) {
892 priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS );
893 priv->rxBufferDMA =priv->txListDMA + sizeof(TLanList) * TLAN_NUM_TX_LISTS;
894 priv->txBuffer = priv->rxBuffer + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
895 priv->txBufferDMA = priv->rxBufferDMA + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
896 }
897
898 err = 0;
899 for ( i = 0; i < 6 ; i++ )
900 err |= TLan_EeReadByte( dev,
901 (u8) priv->adapter->addrOfs + i,
902 (u8 *) &dev->dev_addr[i] );
903 if ( err ) {
904 printk(KERN_ERR "TLAN: %s: Error reading MAC from eeprom: %d\n",
905 dev->name,
906 err );
907 }
908 dev->addr_len = 6;
909
910 netif_carrier_off(dev);
911
912 /* Device methods */
913 dev->open = &TLan_Open;
914 dev->hard_start_xmit = &TLan_StartTx;
915 dev->stop = &TLan_Close;
916 dev->get_stats = &TLan_GetStats;
917 dev->set_multicast_list = &TLan_SetMulticastList;
918 dev->do_ioctl = &TLan_ioctl;
919 #ifdef CONFIG_NET_POLL_CONTROLLER
920 dev->poll_controller = &TLan_Poll;
921 #endif
922 dev->tx_timeout = &TLan_tx_timeout;
923 dev->watchdog_timeo = TX_TIMEOUT;
924
925 return 0;
926
927 } /* TLan_Init */
928
929
930
931
932 /***************************************************************
933 * TLan_Open
934 *
935 * Returns:
936 * 0 on success, error code otherwise.
937 * Parms:
938 * dev Structure of device to be opened.
939 *
940 * This routine puts the driver and TLAN adapter in a
941 * state where it is ready to send and receive packets.
942 * It allocates the IRQ, resets and brings the adapter
943 * out of reset, and allows interrupts. It also delays
944 * the startup for autonegotiation or sends a Rx GO
945 * command to the adapter, as appropriate.
946 *
947 **************************************************************/
948
949 static int TLan_Open( struct net_device *dev )
950 {
951 TLanPrivateInfo *priv = netdev_priv(dev);
952 int err;
953
954 priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
955 err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED, TLanSignature, dev );
956
957 if ( err ) {
958 printk(KERN_ERR "TLAN: Cannot open %s because IRQ %d is already in use.\n", dev->name, dev->irq );
959 return err;
960 }
961
962 init_timer(&priv->timer);
963 netif_start_queue(dev);
964
965 /* NOTE: It might not be necessary to read the stats before a
966 reset if you don't care what the values are.
967 */
968 TLan_ResetLists( dev );
969 TLan_ReadAndClearStats( dev, TLAN_IGNORE );
970 TLan_ResetAdapter( dev );
971
972 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", dev->name, priv->tlanRev );
973
974 return 0;
975
976 } /* TLan_Open */
977
978
979
980 /**************************************************************
981 * TLan_ioctl
982 *
983 * Returns:
984 * 0 on success, error code otherwise
985 * Params:
986 * dev structure of device to receive ioctl.
987 *
988 * rq ifreq structure to hold userspace data.
989 *
990 * cmd ioctl command.
991 *
992 *
993 *************************************************************/
994
995 static int TLan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
996 {
997 TLanPrivateInfo *priv = netdev_priv(dev);
998 struct mii_ioctl_data *data = if_mii(rq);
999 u32 phy = priv->phy[priv->phyNum];
1000
1001 if (!priv->phyOnline)
1002 return -EAGAIN;
1003
1004 switch(cmd) {
1005 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
1006 data->phy_id = phy;
1007
1008
1009 case SIOCGMIIREG: /* Read MII PHY register. */
1010 TLan_MiiReadReg(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, &data->val_out);
1011 return 0;
1012
1013
1014 case SIOCSMIIREG: /* Write MII PHY register. */
1015 if (!capable(CAP_NET_ADMIN))
1016 return -EPERM;
1017 TLan_MiiWriteReg(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
1018 return 0;
1019 default:
1020 return -EOPNOTSUPP;
1021 }
1022 } /* tlan_ioctl */
1023
1024
1025 /***************************************************************
1026 * TLan_tx_timeout
1027 *
1028 * Returns: nothing
1029 *
1030 * Params:
1031 * dev structure of device which timed out
1032 * during transmit.
1033 *
1034 **************************************************************/
1035
1036 static void TLan_tx_timeout(struct net_device *dev)
1037 {
1038
1039 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1040
1041 /* Ok so we timed out, lets see what we can do about it...*/
1042 TLan_FreeLists( dev );
1043 TLan_ResetLists( dev );
1044 TLan_ReadAndClearStats( dev, TLAN_IGNORE );
1045 TLan_ResetAdapter( dev );
1046 dev->trans_start = jiffies;
1047 netif_wake_queue( dev );
1048
1049 }
1050
1051
1052 /***************************************************************
1053 * TLan_tx_timeout_work
1054 *
1055 * Returns: nothing
1056 *
1057 * Params:
1058 * work work item of device which timed out
1059 *
1060 **************************************************************/
1061
1062 static void TLan_tx_timeout_work(struct work_struct *work)
1063 {
1064 TLanPrivateInfo *priv =
1065 container_of(work, TLanPrivateInfo, tlan_tqueue);
1066
1067 TLan_tx_timeout(priv->dev);
1068 }
1069
1070
1071
1072 /***************************************************************
1073 * TLan_StartTx
1074 *
1075 * Returns:
1076 * 0 on success, non-zero on failure.
1077 * Parms:
1078 * skb A pointer to the sk_buff containing the
1079 * frame to be sent.
1080 * dev The device to send the data on.
1081 *
1082 * This function adds a frame to the Tx list to be sent
1083 * ASAP. First it verifies that the adapter is ready and
1084 * there is room in the queue. Then it sets up the next
1085 * available list, copies the frame to the corresponding
1086 * buffer. If the adapter Tx channel is idle, it gives
1087 * the adapter a Tx Go command on the list, otherwise it
1088 * sets the forward address of the previous list to point
1089 * to this one. Then it frees the sk_buff.
1090 *
1091 **************************************************************/
1092
1093 static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
1094 {
1095 TLanPrivateInfo *priv = netdev_priv(dev);
1096 TLanList *tail_list;
1097 dma_addr_t tail_list_phys;
1098 u8 *tail_buffer;
1099 int pad;
1100 unsigned long flags;
1101
1102 if ( ! priv->phyOnline ) {
1103 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", dev->name );
1104 dev_kfree_skb_any(skb);
1105 return 0;
1106 }
1107
1108 tail_list = priv->txList + priv->txTail;
1109 tail_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txTail;
1110
1111 if ( tail_list->cStat != TLAN_CSTAT_UNUSED ) {
1112 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", dev->name, priv->txHead, priv->txTail );
1113 netif_stop_queue(dev);
1114 priv->txBusyCount++;
1115 return 1;
1116 }
1117
1118 tail_list->forward = 0;
1119
1120 if ( bbuf ) {
1121 tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE );
1122 skb_copy_from_linear_data(skb, tail_buffer, skb->len);
1123 } else {
1124 tail_list->buffer[0].address = pci_map_single(priv->pciDev, skb->data, skb->len, PCI_DMA_TODEVICE);
1125 TLan_StoreSKB(tail_list, skb);
1126 }
1127
1128 pad = TLAN_MIN_FRAME_SIZE - skb->len;
1129
1130 if ( pad > 0 ) {
1131 tail_list->frameSize = (u16) skb->len + pad;
1132 tail_list->buffer[0].count = (u32) skb->len;
1133 tail_list->buffer[1].count = TLAN_LAST_BUFFER | (u32) pad;
1134 tail_list->buffer[1].address = TLanPadBufferDMA;
1135 } else {
1136 tail_list->frameSize = (u16) skb->len;
1137 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) skb->len;
1138 tail_list->buffer[1].count = 0;
1139 tail_list->buffer[1].address = 0;
1140 }
1141
1142 spin_lock_irqsave(&priv->lock, flags);
1143 tail_list->cStat = TLAN_CSTAT_READY;
1144 if ( ! priv->txInProgress ) {
1145 priv->txInProgress = 1;
1146 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Starting TX on buffer %d\n", priv->txTail );
1147 outl( tail_list_phys, dev->base_addr + TLAN_CH_PARM );
1148 outl( TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD );
1149 } else {
1150 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Adding buffer %d to TX channel\n", priv->txTail );
1151 if ( priv->txTail == 0 ) {
1152 ( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward = tail_list_phys;
1153 } else {
1154 ( priv->txList + ( priv->txTail - 1 ) )->forward = tail_list_phys;
1155 }
1156 }
1157 spin_unlock_irqrestore(&priv->lock, flags);
1158
1159 CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS );
1160
1161 if ( bbuf )
1162 dev_kfree_skb_any(skb);
1163
1164 dev->trans_start = jiffies;
1165 return 0;
1166
1167 } /* TLan_StartTx */
1168
1169
1170
1171
1172 /***************************************************************
1173 * TLan_HandleInterrupt
1174 *
1175 * Returns:
1176 * Nothing
1177 * Parms:
1178 * irq The line on which the interrupt
1179 * occurred.
1180 * dev_id A pointer to the device assigned to
1181 * this irq line.
1182 *
1183 * This function handles an interrupt generated by its
1184 * assigned TLAN adapter. The function deactivates
1185 * interrupts on its adapter, records the type of
1186 * interrupt, executes the appropriate subhandler, and
1187 * acknowdges the interrupt to the adapter (thus
1188 * re-enabling adapter interrupts.
1189 *
1190 **************************************************************/
1191
1192 static irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
1193 {
1194 u32 ack;
1195 struct net_device *dev;
1196 u32 host_cmd;
1197 u16 host_int;
1198 int type;
1199 TLanPrivateInfo *priv;
1200
1201 dev = dev_id;
1202 priv = netdev_priv(dev);
1203
1204 spin_lock(&priv->lock);
1205
1206 host_int = inw( dev->base_addr + TLAN_HOST_INT );
1207 outw( host_int, dev->base_addr + TLAN_HOST_INT );
1208
1209 type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
1210
1211 ack = TLanIntVector[type]( dev, host_int );
1212
1213 if ( ack ) {
1214 host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
1215 outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
1216 }
1217
1218 spin_unlock(&priv->lock);
1219
1220 return IRQ_HANDLED;
1221 } /* TLan_HandleInterrupts */
1222
1223
1224
1225
1226 /***************************************************************
1227 * TLan_Close
1228 *
1229 * Returns:
1230 * An error code.
1231 * Parms:
1232 * dev The device structure of the device to
1233 * close.
1234 *
1235 * This function shuts down the adapter. It records any
1236 * stats, puts the adapter into reset state, deactivates
1237 * its time as needed, and frees the irq it is using.
1238 *
1239 **************************************************************/
1240
1241 static int TLan_Close(struct net_device *dev)
1242 {
1243 TLanPrivateInfo *priv = netdev_priv(dev);
1244
1245 netif_stop_queue(dev);
1246 priv->neg_be_verbose = 0;
1247
1248 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1249 outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1250 if ( priv->timer.function != NULL ) {
1251 del_timer_sync( &priv->timer );
1252 priv->timer.function = NULL;
1253 }
1254
1255 free_irq( dev->irq, dev );
1256 TLan_FreeLists( dev );
1257 TLAN_DBG( TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name );
1258
1259 return 0;
1260
1261 } /* TLan_Close */
1262
1263
1264
1265
1266 /***************************************************************
1267 * TLan_GetStats
1268 *
1269 * Returns:
1270 * A pointer to the device's statistics structure.
1271 * Parms:
1272 * dev The device structure to return the
1273 * stats for.
1274 *
1275 * This function updates the devices statistics by reading
1276 * the TLAN chip's onboard registers. Then it returns the
1277 * address of the statistics structure.
1278 *
1279 **************************************************************/
1280
1281 static struct net_device_stats *TLan_GetStats( struct net_device *dev )
1282 {
1283 TLanPrivateInfo *priv = netdev_priv(dev);
1284 int i;
1285
1286 /* Should only read stats if open ? */
1287 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1288
1289 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, priv->rxEocCount );
1290 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, priv->txBusyCount );
1291 if ( debug & TLAN_DEBUG_GNRL ) {
1292 TLan_PrintDio( dev->base_addr );
1293 TLan_PhyPrint( dev );
1294 }
1295 if ( debug & TLAN_DEBUG_LIST ) {
1296 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ )
1297 TLan_PrintList( priv->rxList + i, "RX", i );
1298 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ )
1299 TLan_PrintList( priv->txList + i, "TX", i );
1300 }
1301
1302 return ( &( (TLanPrivateInfo *) netdev_priv(dev) )->stats );
1303
1304 } /* TLan_GetStats */
1305
1306
1307
1308
1309 /***************************************************************
1310 * TLan_SetMulticastList
1311 *
1312 * Returns:
1313 * Nothing
1314 * Parms:
1315 * dev The device structure to set the
1316 * multicast list for.
1317 *
1318 * This function sets the TLAN adaptor to various receive
1319 * modes. If the IFF_PROMISC flag is set, promiscuous
1320 * mode is acitviated. Otherwise, promiscuous mode is
1321 * turned off. If the IFF_ALLMULTI flag is set, then
1322 * the hash table is set to receive all group addresses.
1323 * Otherwise, the first three multicast addresses are
1324 * stored in AREG_1-3, and the rest are selected via the
1325 * hash table, as necessary.
1326 *
1327 **************************************************************/
1328
1329 static void TLan_SetMulticastList( struct net_device *dev )
1330 {
1331 struct dev_mc_list *dmi = dev->mc_list;
1332 u32 hash1 = 0;
1333 u32 hash2 = 0;
1334 int i;
1335 u32 offset;
1336 u8 tmp;
1337
1338 if ( dev->flags & IFF_PROMISC ) {
1339 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1340 TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF );
1341 } else {
1342 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1343 TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF );
1344 if ( dev->flags & IFF_ALLMULTI ) {
1345 for ( i = 0; i < 3; i++ )
1346 TLan_SetMac( dev, i + 1, NULL );
1347 TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, 0xFFFFFFFF );
1348 TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, 0xFFFFFFFF );
1349 } else {
1350 for ( i = 0; i < dev->mc_count; i++ ) {
1351 if ( i < 3 ) {
1352 TLan_SetMac( dev, i + 1, (char *) &dmi->dmi_addr );
1353 } else {
1354 offset = TLan_HashFunc( (u8 *) &dmi->dmi_addr );
1355 if ( offset < 32 )
1356 hash1 |= ( 1 << offset );
1357 else
1358 hash2 |= ( 1 << ( offset - 32 ) );
1359 }
1360 dmi = dmi->next;
1361 }
1362 for ( ; i < 3; i++ )
1363 TLan_SetMac( dev, i + 1, NULL );
1364 TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, hash1 );
1365 TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, hash2 );
1366 }
1367 }
1368
1369 } /* TLan_SetMulticastList */
1370
1371
1372
1373 /*****************************************************************************
1374 ******************************************************************************
1375
1376 ThunderLAN Driver Interrupt Vectors and Table
1377
1378 Please see Chap. 4, "Interrupt Handling" of the "ThunderLAN
1379 Programmer's Guide" for more informations on handling interrupts
1380 generated by TLAN based adapters.
1381
1382 ******************************************************************************
1383 *****************************************************************************/
1384
1385
1386 /***************************************************************
1387 * TLan_HandleInvalid
1388 *
1389 * Returns:
1390 * 0
1391 * Parms:
1392 * dev Device assigned the IRQ that was
1393 * raised.
1394 * host_int The contents of the HOST_INT
1395 * port.
1396 *
1397 * This function handles invalid interrupts. This should
1398 * never happen unless some other adapter is trying to use
1399 * the IRQ line assigned to the device.
1400 *
1401 **************************************************************/
1402
1403 static u32 TLan_HandleInvalid( struct net_device *dev, u16 host_int )
1404 {
1405 /* printk( "TLAN: Invalid interrupt on %s.\n", dev->name ); */
1406 return 0;
1407
1408 } /* TLan_HandleInvalid */
1409
1410
1411
1412
1413 /***************************************************************
1414 * TLan_HandleTxEOF
1415 *
1416 * Returns:
1417 * 1
1418 * Parms:
1419 * dev Device assigned the IRQ that was
1420 * raised.
1421 * host_int The contents of the HOST_INT
1422 * port.
1423 *
1424 * This function handles Tx EOF interrupts which are raised
1425 * by the adapter when it has completed sending the
1426 * contents of a buffer. If detemines which list/buffer
1427 * was completed and resets it. If the buffer was the last
1428 * in the channel (EOC), then the function checks to see if
1429 * another buffer is ready to send, and if so, sends a Tx
1430 * Go command. Finally, the driver activates/continues the
1431 * activity LED.
1432 *
1433 **************************************************************/
1434
1435 static u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int )
1436 {
1437 TLanPrivateInfo *priv = netdev_priv(dev);
1438 int eoc = 0;
1439 TLanList *head_list;
1440 dma_addr_t head_list_phys;
1441 u32 ack = 0;
1442 u16 tmpCStat;
1443
1444 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", priv->txHead, priv->txTail );
1445 head_list = priv->txList + priv->txHead;
1446
1447 while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1448 ack++;
1449 if ( ! bbuf ) {
1450 struct sk_buff *skb = TLan_GetSKB(head_list);
1451 pci_unmap_single(priv->pciDev, head_list->buffer[0].address, skb->len, PCI_DMA_TODEVICE);
1452 dev_kfree_skb_any(skb);
1453 head_list->buffer[8].address = 0;
1454 head_list->buffer[9].address = 0;
1455 }
1456
1457 if ( tmpCStat & TLAN_CSTAT_EOC )
1458 eoc = 1;
1459
1460 priv->stats.tx_bytes += head_list->frameSize;
1461
1462 head_list->cStat = TLAN_CSTAT_UNUSED;
1463 netif_start_queue(dev);
1464 CIRC_INC( priv->txHead, TLAN_NUM_TX_LISTS );
1465 head_list = priv->txList + priv->txHead;
1466 }
1467
1468 if (!ack)
1469 printk(KERN_INFO "TLAN: Received interrupt for uncompleted TX frame.\n");
1470
1471 if ( eoc ) {
1472 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOC (Head=%d Tail=%d)\n", priv->txHead, priv->txTail );
1473 head_list = priv->txList + priv->txHead;
1474 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1475 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1476 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1477 ack |= TLAN_HC_GO;
1478 } else {
1479 priv->txInProgress = 0;
1480 }
1481 }
1482
1483 if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1484 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1485 if ( priv->timer.function == NULL ) {
1486 priv->timer.function = &TLan_Timer;
1487 priv->timer.data = (unsigned long) dev;
1488 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1489 priv->timerSetAt = jiffies;
1490 priv->timerType = TLAN_TIMER_ACTIVITY;
1491 add_timer(&priv->timer);
1492 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1493 priv->timerSetAt = jiffies;
1494 }
1495 }
1496
1497 return ack;
1498
1499 } /* TLan_HandleTxEOF */
1500
1501
1502
1503
1504 /***************************************************************
1505 * TLan_HandleStatOverflow
1506 *
1507 * Returns:
1508 * 1
1509 * Parms:
1510 * dev Device assigned the IRQ that was
1511 * raised.
1512 * host_int The contents of the HOST_INT
1513 * port.
1514 *
1515 * This function handles the Statistics Overflow interrupt
1516 * which means that one or more of the TLAN statistics
1517 * registers has reached 1/2 capacity and needs to be read.
1518 *
1519 **************************************************************/
1520
1521 static u32 TLan_HandleStatOverflow( struct net_device *dev, u16 host_int )
1522 {
1523 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1524
1525 return 1;
1526
1527 } /* TLan_HandleStatOverflow */
1528
1529
1530
1531
1532 /***************************************************************
1533 * TLan_HandleRxEOF
1534 *
1535 * Returns:
1536 * 1
1537 * Parms:
1538 * dev Device assigned the IRQ that was
1539 * raised.
1540 * host_int The contents of the HOST_INT
1541 * port.
1542 *
1543 * This function handles the Rx EOF interrupt which
1544 * indicates a frame has been received by the adapter from
1545 * the net and the frame has been transferred to memory.
1546 * The function determines the bounce buffer the frame has
1547 * been loaded into, creates a new sk_buff big enough to
1548 * hold the frame, and sends it to protocol stack. It
1549 * then resets the used buffer and appends it to the end
1550 * of the list. If the frame was the last in the Rx
1551 * channel (EOC), the function restarts the receive channel
1552 * by sending an Rx Go command to the adapter. Then it
1553 * activates/continues the activity LED.
1554 *
1555 **************************************************************/
1556
1557 static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
1558 {
1559 TLanPrivateInfo *priv = netdev_priv(dev);
1560 u32 ack = 0;
1561 int eoc = 0;
1562 u8 *head_buffer;
1563 TLanList *head_list;
1564 struct sk_buff *skb;
1565 TLanList *tail_list;
1566 void *t;
1567 u32 frameSize;
1568 u16 tmpCStat;
1569 dma_addr_t head_list_phys;
1570
1571 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOF (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail );
1572 head_list = priv->rxList + priv->rxHead;
1573 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1574
1575 while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1576 frameSize = head_list->frameSize;
1577 ack++;
1578 if (tmpCStat & TLAN_CSTAT_EOC)
1579 eoc = 1;
1580
1581 if (bbuf) {
1582 skb = dev_alloc_skb(frameSize + 7);
1583 if (skb == NULL)
1584 printk(KERN_INFO "TLAN: Couldn't allocate memory for received data.\n");
1585 else {
1586 head_buffer = priv->rxBuffer + (priv->rxHead * TLAN_MAX_FRAME_SIZE);
1587 skb_reserve(skb, 2);
1588 t = (void *) skb_put(skb, frameSize);
1589
1590 priv->stats.rx_bytes += head_list->frameSize;
1591
1592 memcpy( t, head_buffer, frameSize );
1593 skb->protocol = eth_type_trans( skb, dev );
1594 netif_rx( skb );
1595 }
1596 } else {
1597 struct sk_buff *new_skb;
1598
1599 /*
1600 * I changed the algorithm here. What we now do
1601 * is allocate the new frame. If this fails we
1602 * simply recycle the frame.
1603 */
1604
1605 new_skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 );
1606
1607 if ( new_skb != NULL ) {
1608 skb = TLan_GetSKB(head_list);
1609 pci_unmap_single(priv->pciDev, head_list->buffer[0].address, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1610 skb_trim( skb, frameSize );
1611
1612 priv->stats.rx_bytes += frameSize;
1613
1614 skb->protocol = eth_type_trans( skb, dev );
1615 netif_rx( skb );
1616
1617 skb_reserve( new_skb, 2 );
1618 t = (void *) skb_put( new_skb, TLAN_MAX_FRAME_SIZE );
1619 head_list->buffer[0].address = pci_map_single(priv->pciDev, new_skb->data, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1620 head_list->buffer[8].address = (u32) t;
1621 TLan_StoreSKB(head_list, new_skb);
1622 } else
1623 printk(KERN_WARNING "TLAN: Couldn't allocate memory for received data.\n" );
1624 }
1625
1626 head_list->forward = 0;
1627 head_list->cStat = 0;
1628 tail_list = priv->rxList + priv->rxTail;
1629 tail_list->forward = head_list_phys;
1630
1631 CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS );
1632 CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS );
1633 head_list = priv->rxList + priv->rxHead;
1634 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1635 }
1636
1637 if (!ack)
1638 printk(KERN_INFO "TLAN: Received interrupt for uncompleted RX frame.\n");
1639
1640
1641
1642
1643 if ( eoc ) {
1644 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail );
1645 head_list = priv->rxList + priv->rxHead;
1646 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1647 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1648 ack |= TLAN_HC_GO | TLAN_HC_RT;
1649 priv->rxEocCount++;
1650 }
1651
1652 if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1653 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1654 if ( priv->timer.function == NULL ) {
1655 priv->timer.function = &TLan_Timer;
1656 priv->timer.data = (unsigned long) dev;
1657 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1658 priv->timerSetAt = jiffies;
1659 priv->timerType = TLAN_TIMER_ACTIVITY;
1660 add_timer(&priv->timer);
1661 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1662 priv->timerSetAt = jiffies;
1663 }
1664 }
1665
1666 dev->last_rx = jiffies;
1667
1668 return ack;
1669
1670 } /* TLan_HandleRxEOF */
1671
1672
1673
1674
1675 /***************************************************************
1676 * TLan_HandleDummy
1677 *
1678 * Returns:
1679 * 1
1680 * Parms:
1681 * dev Device assigned the IRQ that was
1682 * raised.
1683 * host_int The contents of the HOST_INT
1684 * port.
1685 *
1686 * This function handles the Dummy interrupt, which is
1687 * raised whenever a test interrupt is generated by setting
1688 * the Req_Int bit of HOST_CMD to 1.
1689 *
1690 **************************************************************/
1691
1692 static u32 TLan_HandleDummy( struct net_device *dev, u16 host_int )
1693 {
1694 printk( "TLAN: Test interrupt on %s.\n", dev->name );
1695 return 1;
1696
1697 } /* TLan_HandleDummy */
1698
1699
1700
1701
1702 /***************************************************************
1703 * TLan_HandleTxEOC
1704 *
1705 * Returns:
1706 * 1
1707 * Parms:
1708 * dev Device assigned the IRQ that was
1709 * raised.
1710 * host_int The contents of the HOST_INT
1711 * port.
1712 *
1713 * This driver is structured to determine EOC occurrences by
1714 * reading the CSTAT member of the list structure. Tx EOC
1715 * interrupts are disabled via the DIO INTDIS register.
1716 * However, TLAN chips before revision 3.0 didn't have this
1717 * functionality, so process EOC events if this is the
1718 * case.
1719 *
1720 **************************************************************/
1721
1722 static u32 TLan_HandleTxEOC( struct net_device *dev, u16 host_int )
1723 {
1724 TLanPrivateInfo *priv = netdev_priv(dev);
1725 TLanList *head_list;
1726 dma_addr_t head_list_phys;
1727 u32 ack = 1;
1728
1729 host_int = 0;
1730 if ( priv->tlanRev < 0x30 ) {
1731 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOC (Head=%d Tail=%d) -- IRQ\n", priv->txHead, priv->txTail );
1732 head_list = priv->txList + priv->txHead;
1733 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1734 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1735 netif_stop_queue(dev);
1736 outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1737 ack |= TLAN_HC_GO;
1738 } else {
1739 priv->txInProgress = 0;
1740 }
1741 }
1742
1743 return ack;
1744
1745 } /* TLan_HandleTxEOC */
1746
1747
1748
1749
1750 /***************************************************************
1751 * TLan_HandleStatusCheck
1752 *
1753 * Returns:
1754 * 0 if Adapter check, 1 if Network Status check.
1755 * Parms:
1756 * dev Device assigned the IRQ that was
1757 * raised.
1758 * host_int The contents of the HOST_INT
1759 * port.
1760 *
1761 * This function handles Adapter Check/Network Status
1762 * interrupts generated by the adapter. It checks the
1763 * vector in the HOST_INT register to determine if it is
1764 * an Adapter Check interrupt. If so, it resets the
1765 * adapter. Otherwise it clears the status registers
1766 * and services the PHY.
1767 *
1768 **************************************************************/
1769
1770 static u32 TLan_HandleStatusCheck( struct net_device *dev, u16 host_int )
1771 {
1772 TLanPrivateInfo *priv = netdev_priv(dev);
1773 u32 ack;
1774 u32 error;
1775 u8 net_sts;
1776 u32 phy;
1777 u16 tlphy_ctl;
1778 u16 tlphy_sts;
1779
1780 ack = 1;
1781 if ( host_int & TLAN_HI_IV_MASK ) {
1782 netif_stop_queue( dev );
1783 error = inl( dev->base_addr + TLAN_CH_PARM );
1784 printk( "TLAN: %s: Adaptor Error = 0x%x\n", dev->name, error );
1785 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1786 outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1787
1788 schedule_work(&priv->tlan_tqueue);
1789
1790 netif_wake_queue(dev);
1791 ack = 0;
1792 } else {
1793 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name );
1794 phy = priv->phy[priv->phyNum];
1795
1796 net_sts = TLan_DioRead8( dev->base_addr, TLAN_NET_STS );
1797 if ( net_sts ) {
1798 TLan_DioWrite8( dev->base_addr, TLAN_NET_STS, net_sts );
1799 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", dev->name, (unsigned) net_sts );
1800 }
1801 if ( ( net_sts & TLAN_NET_STS_MIRQ ) && ( priv->phyNum == 0 ) ) {
1802 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_STS, &tlphy_sts );
1803 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
1804 if ( ! ( tlphy_sts & TLAN_TS_POLOK ) && ! ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1805 tlphy_ctl |= TLAN_TC_SWAPOL;
1806 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1807 } else if ( ( tlphy_sts & TLAN_TS_POLOK ) && ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1808 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1809 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1810 }
1811
1812 if (debug) {
1813 TLan_PhyPrint( dev );
1814 }
1815 }
1816 }
1817
1818 return ack;
1819
1820 } /* TLan_HandleStatusCheck */
1821
1822
1823
1824
1825 /***************************************************************
1826 * TLan_HandleRxEOC
1827 *
1828 * Returns:
1829 * 1
1830 * Parms:
1831 * dev Device assigned the IRQ that was
1832 * raised.
1833 * host_int The contents of the HOST_INT
1834 * port.
1835 *
1836 * This driver is structured to determine EOC occurrences by
1837 * reading the CSTAT member of the list structure. Rx EOC
1838 * interrupts are disabled via the DIO INTDIS register.
1839 * However, TLAN chips before revision 3.0 didn't have this
1840 * CSTAT member or a INTDIS register, so if this chip is
1841 * pre-3.0, process EOC interrupts normally.
1842 *
1843 **************************************************************/
1844
1845 static u32 TLan_HandleRxEOC( struct net_device *dev, u16 host_int )
1846 {
1847 TLanPrivateInfo *priv = netdev_priv(dev);
1848 dma_addr_t head_list_phys;
1849 u32 ack = 1;
1850
1851 if ( priv->tlanRev < 0x30 ) {
1852 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d) -- IRQ\n", priv->rxHead, priv->rxTail );
1853 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1854 outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1855 ack |= TLAN_HC_GO | TLAN_HC_RT;
1856 priv->rxEocCount++;
1857 }
1858
1859 return ack;
1860
1861 } /* TLan_HandleRxEOC */
1862
1863
1864
1865
1866 /*****************************************************************************
1867 ******************************************************************************
1868
1869 ThunderLAN Driver Timer Function
1870
1871 ******************************************************************************
1872 *****************************************************************************/
1873
1874
1875 /***************************************************************
1876 * TLan_Timer
1877 *
1878 * Returns:
1879 * Nothing
1880 * Parms:
1881 * data A value given to add timer when
1882 * add_timer was called.
1883 *
1884 * This function handles timed functionality for the
1885 * TLAN driver. The two current timer uses are for
1886 * delaying for autonegotionation and driving the ACT LED.
1887 * - Autonegotiation requires being allowed about
1888 * 2 1/2 seconds before attempting to transmit a
1889 * packet. It would be a very bad thing to hang
1890 * the kernel this long, so the driver doesn't
1891 * allow transmission 'til after this time, for
1892 * certain PHYs. It would be much nicer if all
1893 * PHYs were interrupt-capable like the internal
1894 * PHY.
1895 * - The ACT LED, which shows adapter activity, is
1896 * driven by the driver, and so must be left on
1897 * for a short period to power up the LED so it
1898 * can be seen. This delay can be changed by
1899 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1900 * if desired. 100 ms produces a slightly
1901 * sluggish response.
1902 *
1903 **************************************************************/
1904
1905 static void TLan_Timer( unsigned long data )
1906 {
1907 struct net_device *dev = (struct net_device *) data;
1908 TLanPrivateInfo *priv = netdev_priv(dev);
1909 u32 elapsed;
1910 unsigned long flags = 0;
1911
1912 priv->timer.function = NULL;
1913
1914 switch ( priv->timerType ) {
1915 #ifdef MONITOR
1916 case TLAN_TIMER_LINK_BEAT:
1917 TLan_PhyMonitor( dev );
1918 break;
1919 #endif
1920 case TLAN_TIMER_PHY_PDOWN:
1921 TLan_PhyPowerDown( dev );
1922 break;
1923 case TLAN_TIMER_PHY_PUP:
1924 TLan_PhyPowerUp( dev );
1925 break;
1926 case TLAN_TIMER_PHY_RESET:
1927 TLan_PhyReset( dev );
1928 break;
1929 case TLAN_TIMER_PHY_START_LINK:
1930 TLan_PhyStartLink( dev );
1931 break;
1932 case TLAN_TIMER_PHY_FINISH_AN:
1933 TLan_PhyFinishAutoNeg( dev );
1934 break;
1935 case TLAN_TIMER_FINISH_RESET:
1936 TLan_FinishReset( dev );
1937 break;
1938 case TLAN_TIMER_ACTIVITY:
1939 spin_lock_irqsave(&priv->lock, flags);
1940 if ( priv->timer.function == NULL ) {
1941 elapsed = jiffies - priv->timerSetAt;
1942 if ( elapsed >= TLAN_TIMER_ACT_DELAY ) {
1943 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
1944 } else {
1945 priv->timer.function = &TLan_Timer;
1946 priv->timer.expires = priv->timerSetAt + TLAN_TIMER_ACT_DELAY;
1947 spin_unlock_irqrestore(&priv->lock, flags);
1948 add_timer( &priv->timer );
1949 break;
1950 }
1951 }
1952 spin_unlock_irqrestore(&priv->lock, flags);
1953 break;
1954 default:
1955 break;
1956 }
1957
1958 } /* TLan_Timer */
1959
1960
1961
1962
1963 /*****************************************************************************
1964 ******************************************************************************
1965
1966 ThunderLAN Driver Adapter Related Routines
1967
1968 ******************************************************************************
1969 *****************************************************************************/
1970
1971
1972 /***************************************************************
1973 * TLan_ResetLists
1974 *
1975 * Returns:
1976 * Nothing
1977 * Parms:
1978 * dev The device structure with the list
1979 * stuctures to be reset.
1980 *
1981 * This routine sets the variables associated with managing
1982 * the TLAN lists to their initial values.
1983 *
1984 **************************************************************/
1985
1986 static void TLan_ResetLists( struct net_device *dev )
1987 {
1988 TLanPrivateInfo *priv = netdev_priv(dev);
1989 int i;
1990 TLanList *list;
1991 dma_addr_t list_phys;
1992 struct sk_buff *skb;
1993 void *t = NULL;
1994
1995 priv->txHead = 0;
1996 priv->txTail = 0;
1997 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
1998 list = priv->txList + i;
1999 list->cStat = TLAN_CSTAT_UNUSED;
2000 if ( bbuf ) {
2001 list->buffer[0].address = priv->txBufferDMA + ( i * TLAN_MAX_FRAME_SIZE );
2002 } else {
2003 list->buffer[0].address = 0;
2004 }
2005 list->buffer[2].count = 0;
2006 list->buffer[2].address = 0;
2007 list->buffer[8].address = 0;
2008 list->buffer[9].address = 0;
2009 }
2010
2011 priv->rxHead = 0;
2012 priv->rxTail = TLAN_NUM_RX_LISTS - 1;
2013 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
2014 list = priv->rxList + i;
2015 list_phys = priv->rxListDMA + sizeof(TLanList) * i;
2016 list->cStat = TLAN_CSTAT_READY;
2017 list->frameSize = TLAN_MAX_FRAME_SIZE;
2018 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
2019 if ( bbuf ) {
2020 list->buffer[0].address = priv->rxBufferDMA + ( i * TLAN_MAX_FRAME_SIZE );
2021 } else {
2022 skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 );
2023 if ( skb == NULL ) {
2024 printk( "TLAN: Couldn't allocate memory for received data.\n" );
2025 /* If this ever happened it would be a problem */
2026 } else {
2027 skb->dev = dev;
2028 skb_reserve( skb, 2 );
2029 t = (void *) skb_put( skb, TLAN_MAX_FRAME_SIZE );
2030 }
2031 list->buffer[0].address = pci_map_single(priv->pciDev, t, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
2032 list->buffer[8].address = (u32) t;
2033 TLan_StoreSKB(list, skb);
2034 }
2035 list->buffer[1].count = 0;
2036 list->buffer[1].address = 0;
2037 if ( i < TLAN_NUM_RX_LISTS - 1 )
2038 list->forward = list_phys + sizeof(TLanList);
2039 else
2040 list->forward = 0;
2041 }
2042
2043 } /* TLan_ResetLists */
2044
2045
2046 static void TLan_FreeLists( struct net_device *dev )
2047 {
2048 TLanPrivateInfo *priv = netdev_priv(dev);
2049 int i;
2050 TLanList *list;
2051 struct sk_buff *skb;
2052
2053 if ( ! bbuf ) {
2054 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
2055 list = priv->txList + i;
2056 skb = TLan_GetSKB(list);
2057 if ( skb ) {
2058 pci_unmap_single(priv->pciDev, list->buffer[0].address, skb->len, PCI_DMA_TODEVICE);
2059 dev_kfree_skb_any( skb );
2060 list->buffer[8].address = 0;
2061 list->buffer[9].address = 0;
2062 }
2063 }
2064
2065 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
2066 list = priv->rxList + i;
2067 skb = TLan_GetSKB(list);
2068 if ( skb ) {
2069 pci_unmap_single(priv->pciDev, list->buffer[0].address, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
2070 dev_kfree_skb_any( skb );
2071 list->buffer[8].address = 0;
2072 list->buffer[9].address = 0;
2073 }
2074 }
2075 }
2076 } /* TLan_FreeLists */
2077
2078
2079
2080
2081 /***************************************************************
2082 * TLan_PrintDio
2083 *
2084 * Returns:
2085 * Nothing
2086 * Parms:
2087 * io_base Base IO port of the device of
2088 * which to print DIO registers.
2089 *
2090 * This function prints out all the internal (DIO)
2091 * registers of a TLAN chip.
2092 *
2093 **************************************************************/
2094
2095 static void TLan_PrintDio( u16 io_base )
2096 {
2097 u32 data0, data1;
2098 int i;
2099
2100 printk( "TLAN: Contents of internal registers for io base 0x%04hx.\n", io_base );
2101 printk( "TLAN: Off. +0 +4\n" );
2102 for ( i = 0; i < 0x4C; i+= 8 ) {
2103 data0 = TLan_DioRead32( io_base, i );
2104 data1 = TLan_DioRead32( io_base, i + 0x4 );
2105 printk( "TLAN: 0x%02x 0x%08x 0x%08x\n", i, data0, data1 );
2106 }
2107
2108 } /* TLan_PrintDio */
2109
2110
2111
2112
2113 /***************************************************************
2114 * TLan_PrintList
2115 *
2116 * Returns:
2117 * Nothing
2118 * Parms:
2119 * list A pointer to the TLanList structure to
2120 * be printed.
2121 * type A string to designate type of list,
2122 * "Rx" or "Tx".
2123 * num The index of the list.
2124 *
2125 * This function prints out the contents of the list
2126 * pointed to by the list parameter.
2127 *
2128 **************************************************************/
2129
2130 static void TLan_PrintList( TLanList *list, char *type, int num)
2131 {
2132 int i;
2133
2134 printk( "TLAN: %s List %d at 0x%08x\n", type, num, (u32) list );
2135 printk( "TLAN: Forward = 0x%08x\n", list->forward );
2136 printk( "TLAN: CSTAT = 0x%04hx\n", list->cStat );
2137 printk( "TLAN: Frame Size = 0x%04hx\n", list->frameSize );
2138 /* for ( i = 0; i < 10; i++ ) { */
2139 for ( i = 0; i < 2; i++ ) {
2140 printk( "TLAN: Buffer[%d].count, addr = 0x%08x, 0x%08x\n", i, list->buffer[i].count, list->buffer[i].address );
2141 }
2142
2143 } /* TLan_PrintList */
2144
2145
2146
2147
2148 /***************************************************************
2149 * TLan_ReadAndClearStats
2150 *
2151 * Returns:
2152 * Nothing
2153 * Parms:
2154 * dev Pointer to device structure of adapter
2155 * to which to read stats.
2156 * record Flag indicating whether to add
2157 *
2158 * This functions reads all the internal status registers
2159 * of the TLAN chip, which clears them as a side effect.
2160 * It then either adds the values to the device's status
2161 * struct, or discards them, depending on whether record
2162 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2163 *
2164 **************************************************************/
2165
2166 static void TLan_ReadAndClearStats( struct net_device *dev, int record )
2167 {
2168 TLanPrivateInfo *priv = netdev_priv(dev);
2169 u32 tx_good, tx_under;
2170 u32 rx_good, rx_over;
2171 u32 def_tx, crc, code;
2172 u32 multi_col, single_col;
2173 u32 excess_col, late_col, loss;
2174
2175 outw( TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2176 tx_good = inb( dev->base_addr + TLAN_DIO_DATA );
2177 tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2178 tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2179 tx_under = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2180
2181 outw( TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2182 rx_good = inb( dev->base_addr + TLAN_DIO_DATA );
2183 rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2184 rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2185 rx_over = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2186
2187 outw( TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR );
2188 def_tx = inb( dev->base_addr + TLAN_DIO_DATA );
2189 def_tx += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2190 crc = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2191 code = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2192
2193 outw( TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2194 multi_col = inb( dev->base_addr + TLAN_DIO_DATA );
2195 multi_col += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2196 single_col = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2197 single_col += inb( dev->base_addr + TLAN_DIO_DATA + 3 ) << 8;
2198
2199 outw( TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2200 excess_col = inb( dev->base_addr + TLAN_DIO_DATA );
2201 late_col = inb( dev->base_addr + TLAN_DIO_DATA + 1 );
2202 loss = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2203
2204 if ( record ) {
2205 priv->stats.rx_packets += rx_good;
2206 priv->stats.rx_errors += rx_over + crc + code;
2207 priv->stats.tx_packets += tx_good;
2208 priv->stats.tx_errors += tx_under + loss;
2209 priv->stats.collisions += multi_col + single_col + excess_col + late_col;
2210
2211 priv->stats.rx_over_errors += rx_over;
2212 priv->stats.rx_crc_errors += crc;
2213 priv->stats.rx_frame_errors += code;
2214
2215 priv->stats.tx_aborted_errors += tx_under;
2216 priv->stats.tx_carrier_errors += loss;
2217 }
2218
2219 } /* TLan_ReadAndClearStats */
2220
2221
2222
2223
2224 /***************************************************************
2225 * TLan_Reset
2226 *
2227 * Returns:
2228 * 0
2229 * Parms:
2230 * dev Pointer to device structure of adapter
2231 * to be reset.
2232 *
2233 * This function resets the adapter and it's physical
2234 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2235 * Programmer's Guide" for details. The routine tries to
2236 * implement what is detailed there, though adjustments
2237 * have been made.
2238 *
2239 **************************************************************/
2240
2241 static void
2242 TLan_ResetAdapter( struct net_device *dev )
2243 {
2244 TLanPrivateInfo *priv = netdev_priv(dev);
2245 int i;
2246 u32 addr;
2247 u32 data;
2248 u8 data8;
2249
2250 priv->tlanFullDuplex = FALSE;
2251 priv->phyOnline=0;
2252 netif_carrier_off(dev);
2253
2254 /* 1. Assert reset bit. */
2255
2256 data = inl(dev->base_addr + TLAN_HOST_CMD);
2257 data |= TLAN_HC_AD_RST;
2258 outl(data, dev->base_addr + TLAN_HOST_CMD);
2259
2260 udelay(1000);
2261
2262 /* 2. Turn off interrupts. ( Probably isn't necessary ) */
2263
2264 data = inl(dev->base_addr + TLAN_HOST_CMD);
2265 data |= TLAN_HC_INT_OFF;
2266 outl(data, dev->base_addr + TLAN_HOST_CMD);
2267
2268 /* 3. Clear AREGs and HASHs. */
2269
2270 for ( i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4 ) {
2271 TLan_DioWrite32( dev->base_addr, (u16) i, 0 );
2272 }
2273
2274 /* 4. Setup NetConfig register. */
2275
2276 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2277 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2278
2279 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2280
2281 outl( TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD );
2282 outl( TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD );
2283
2284 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2285
2286 outw( TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR );
2287 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2288 TLan_SetBit( TLAN_NET_SIO_NMRST, addr );
2289
2290 /* 7. Setup the remaining registers. */
2291
2292 if ( priv->tlanRev >= 0x30 ) {
2293 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2294 TLan_DioWrite8( dev->base_addr, TLAN_INT_DIS, data8 );
2295 }
2296 TLan_PhyDetect( dev );
2297 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2298
2299 if ( priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY ) {
2300 data |= TLAN_NET_CFG_BIT;
2301 if ( priv->aui == 1 ) {
2302 TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x0a );
2303 } else if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2304 TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x00 );
2305 priv->tlanFullDuplex = TRUE;
2306 } else {
2307 TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x08 );
2308 }
2309 }
2310
2311 if ( priv->phyNum == 0 ) {
2312 data |= TLAN_NET_CFG_PHY_EN;
2313 }
2314 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2315
2316 if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2317 TLan_FinishReset( dev );
2318 } else {
2319 TLan_PhyPowerDown( dev );
2320 }
2321
2322 } /* TLan_ResetAdapter */
2323
2324
2325
2326
2327 static void
2328 TLan_FinishReset( struct net_device *dev )
2329 {
2330 TLanPrivateInfo *priv = netdev_priv(dev);
2331 u8 data;
2332 u32 phy;
2333 u8 sio;
2334 u16 status;
2335 u16 partner;
2336 u16 tlphy_ctl;
2337 u16 tlphy_par;
2338 u16 tlphy_id1, tlphy_id2;
2339 int i;
2340
2341 phy = priv->phy[priv->phyNum];
2342
2343 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2344 if ( priv->tlanFullDuplex ) {
2345 data |= TLAN_NET_CMD_DUPLEX;
2346 }
2347 TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, data );
2348 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2349 if ( priv->phyNum == 0 ) {
2350 data |= TLAN_NET_MASK_MASK7;
2351 }
2352 TLan_DioWrite8( dev->base_addr, TLAN_NET_MASK, data );
2353 TLan_DioWrite16( dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7 );
2354 TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &tlphy_id1 );
2355 TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &tlphy_id2 );
2356
2357 if ( ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) || ( priv->aui ) ) {
2358 status = MII_GS_LINK;
2359 printk( "TLAN: %s: Link forced.\n", dev->name );
2360 } else {
2361 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2362 udelay( 1000 );
2363 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2364 if ( (status & MII_GS_LINK) && /* We only support link info on Nat.Sem. PHY's */
2365 (tlphy_id1 == NAT_SEM_ID1) &&
2366 (tlphy_id2 == NAT_SEM_ID2) ) {
2367 TLan_MiiReadReg( dev, phy, MII_AN_LPA, &partner );
2368 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_PAR, &tlphy_par );
2369
2370 printk( "TLAN: %s: Link active with ", dev->name );
2371 if (!(tlphy_par & TLAN_PHY_AN_EN_STAT)) {
2372 printk( "forced 10%sMbps %s-Duplex\n",
2373 tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2374 tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2375 } else {
2376 printk( "AutoNegotiation enabled, at 10%sMbps %s-Duplex\n",
2377 tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2378 tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2379 printk("TLAN: Partner capability: ");
2380 for (i = 5; i <= 10; i++)
2381 if (partner & (1<<i))
2382 printk("%s",media[i-5]);
2383 printk("\n");
2384 }
2385
2386 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2387 #ifdef MONITOR
2388 /* We have link beat..for now anyway */
2389 priv->link = 1;
2390 /*Enabling link beat monitoring */
2391 TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_LINK_BEAT );
2392 #endif
2393 } else if (status & MII_GS_LINK) {
2394 printk( "TLAN: %s: Link active\n", dev->name );
2395 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2396 }
2397 }
2398
2399 if ( priv->phyNum == 0 ) {
2400 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
2401 tlphy_ctl |= TLAN_TC_INTEN;
2402 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl );
2403 sio = TLan_DioRead8( dev->base_addr, TLAN_NET_SIO );
2404 sio |= TLAN_NET_SIO_MINTEN;
2405 TLan_DioWrite8( dev->base_addr, TLAN_NET_SIO, sio );
2406 }
2407
2408 if ( status & MII_GS_LINK ) {
2409 TLan_SetMac( dev, 0, dev->dev_addr );
2410 priv->phyOnline = 1;
2411 outb( ( TLAN_HC_INT_ON >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2412 if ( debug >= 1 && debug != TLAN_DEBUG_PROBE ) {
2413 outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2414 }
2415 outl( priv->rxListDMA, dev->base_addr + TLAN_CH_PARM );
2416 outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
2417 netif_carrier_on(dev);
2418 } else {
2419 printk( "TLAN: %s: Link inactive, will retry in 10 secs...\n", dev->name );
2420 TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_FINISH_RESET );
2421 return;
2422 }
2423 TLan_SetMulticastList(dev);
2424
2425 } /* TLan_FinishReset */
2426
2427
2428
2429
2430 /***************************************************************
2431 * TLan_SetMac
2432 *
2433 * Returns:
2434 * Nothing
2435 * Parms:
2436 * dev Pointer to device structure of adapter
2437 * on which to change the AREG.
2438 * areg The AREG to set the address in (0 - 3).
2439 * mac A pointer to an array of chars. Each
2440 * element stores one byte of the address.
2441 * IE, it isn't in ascii.
2442 *
2443 * This function transfers a MAC address to one of the
2444 * TLAN AREGs (address registers). The TLAN chip locks
2445 * the register on writing to offset 0 and unlocks the
2446 * register after writing to offset 5. If NULL is passed
2447 * in mac, then the AREG is filled with 0's.
2448 *
2449 **************************************************************/
2450
2451 static void TLan_SetMac( struct net_device *dev, int areg, char *mac )
2452 {
2453 int i;
2454
2455 areg *= 6;
2456
2457 if ( mac != NULL ) {
2458 for ( i = 0; i < 6; i++ )
2459 TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, mac[i] );
2460 } else {
2461 for ( i = 0; i < 6; i++ )
2462 TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, 0 );
2463 }
2464
2465 } /* TLan_SetMac */
2466
2467
2468
2469
2470 /*****************************************************************************
2471 ******************************************************************************
2472
2473 ThunderLAN Driver PHY Layer Routines
2474
2475 ******************************************************************************
2476 *****************************************************************************/
2477
2478
2479
2480 /*********************************************************************
2481 * TLan_PhyPrint
2482 *
2483 * Returns:
2484 * Nothing
2485 * Parms:
2486 * dev A pointer to the device structure of the
2487 * TLAN device having the PHYs to be detailed.
2488 *
2489 * This function prints the registers a PHY (aka transceiver).
2490 *
2491 ********************************************************************/
2492
2493 static void TLan_PhyPrint( struct net_device *dev )
2494 {
2495 TLanPrivateInfo *priv = netdev_priv(dev);
2496 u16 i, data0, data1, data2, data3, phy;
2497
2498 phy = priv->phy[priv->phyNum];
2499
2500 if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2501 printk( "TLAN: Device %s, Unmanaged PHY.\n", dev->name );
2502 } else if ( phy <= TLAN_PHY_MAX_ADDR ) {
2503 printk( "TLAN: Device %s, PHY 0x%02x.\n", dev->name, phy );
2504 printk( "TLAN: Off. +0 +1 +2 +3 \n" );
2505 for ( i = 0; i < 0x20; i+= 4 ) {
2506 printk( "TLAN: 0x%02x", i );
2507 TLan_MiiReadReg( dev, phy, i, &data0 );
2508 printk( " 0x%04hx", data0 );
2509 TLan_MiiReadReg( dev, phy, i + 1, &data1 );
2510 printk( " 0x%04hx", data1 );
2511 TLan_MiiReadReg( dev, phy, i + 2, &data2 );
2512 printk( " 0x%04hx", data2 );
2513 TLan_MiiReadReg( dev, phy, i + 3, &data3 );
2514 printk( " 0x%04hx\n", data3 );
2515 }
2516 } else {
2517 printk( "TLAN: Device %s, Invalid PHY.\n", dev->name );
2518 }
2519
2520 } /* TLan_PhyPrint */
2521
2522
2523
2524
2525 /*********************************************************************
2526 * TLan_PhyDetect
2527 *
2528 * Returns:
2529 * Nothing
2530 * Parms:
2531 * dev A pointer to the device structure of the adapter
2532 * for which the PHY needs determined.
2533 *
2534 * So far I've found that adapters which have external PHYs
2535 * may also use the internal PHY for part of the functionality.
2536 * (eg, AUI/Thinnet). This function finds out if this TLAN
2537 * chip has an internal PHY, and then finds the first external
2538 * PHY (starting from address 0) if it exists).
2539 *
2540 ********************************************************************/
2541
2542 static void TLan_PhyDetect( struct net_device *dev )
2543 {
2544 TLanPrivateInfo *priv = netdev_priv(dev);
2545 u16 control;
2546 u16 hi;
2547 u16 lo;
2548 u32 phy;
2549
2550 if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2551 priv->phyNum = 0xFFFF;
2552 return;
2553 }
2554
2555 TLan_MiiReadReg( dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi );
2556
2557 if ( hi != 0xFFFF ) {
2558 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2559 } else {
2560 priv->phy[0] = TLAN_PHY_NONE;
2561 }
2562
2563 priv->phy[1] = TLAN_PHY_NONE;
2564 for ( phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++ ) {
2565 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &control );
2566 TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &hi );
2567 TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &lo );
2568 if ( ( control != 0xFFFF ) || ( hi != 0xFFFF ) || ( lo != 0xFFFF ) ) {
2569 TLAN_DBG( TLAN_DEBUG_GNRL, "PHY found at %02x %04x %04x %04x\n", phy, control, hi, lo );
2570 if ( ( priv->phy[1] == TLAN_PHY_NONE ) && ( phy != TLAN_PHY_MAX_ADDR ) ) {
2571 priv->phy[1] = phy;
2572 }
2573 }
2574 }
2575
2576 if ( priv->phy[1] != TLAN_PHY_NONE ) {
2577 priv->phyNum = 1;
2578 } else if ( priv->phy[0] != TLAN_PHY_NONE ) {
2579 priv->phyNum = 0;
2580 } else {
2581 printk( "TLAN: Cannot initialize device, no PHY was found!\n" );
2582 }
2583
2584 } /* TLan_PhyDetect */
2585
2586
2587
2588
2589 static void TLan_PhyPowerDown( struct net_device *dev )
2590 {
2591 TLanPrivateInfo *priv = netdev_priv(dev);
2592 u16 value;
2593
2594 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name );
2595 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2596 TLan_MiiSync( dev->base_addr );
2597 TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2598 if ( ( priv->phyNum == 0 ) && ( priv->phy[1] != TLAN_PHY_NONE ) && ( ! ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) ) ) {
2599 TLan_MiiSync( dev->base_addr );
2600 TLan_MiiWriteReg( dev, priv->phy[1], MII_GEN_CTL, value );
2601 }
2602
2603 /* Wait for 50 ms and powerup
2604 * This is abitrary. It is intended to make sure the
2605 * transceiver settles.
2606 */
2607 TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_PUP );
2608
2609 } /* TLan_PhyPowerDown */
2610
2611
2612
2613
2614 static void TLan_PhyPowerUp( struct net_device *dev )
2615 {
2616 TLanPrivateInfo *priv = netdev_priv(dev);
2617 u16 value;
2618
2619 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name );
2620 TLan_MiiSync( dev->base_addr );
2621 value = MII_GC_LOOPBK;
2622 TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2623 TLan_MiiSync(dev->base_addr);
2624 /* Wait for 500 ms and reset the
2625 * transceiver. The TLAN docs say both 50 ms and
2626 * 500 ms, so do the longer, just in case.
2627 */
2628 TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_RESET );
2629
2630 } /* TLan_PhyPowerUp */
2631
2632
2633
2634
2635 static void TLan_PhyReset( struct net_device *dev )
2636 {
2637 TLanPrivateInfo *priv = netdev_priv(dev);
2638 u16 phy;
2639 u16 value;
2640
2641 phy = priv->phy[priv->phyNum];
2642
2643 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name );
2644 TLan_MiiSync( dev->base_addr );
2645 value = MII_GC_LOOPBK | MII_GC_RESET;
2646 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, value );
2647 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2648 while ( value & MII_GC_RESET ) {
2649 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2650 }
2651
2652 /* Wait for 500 ms and initialize.
2653 * I don't remember why I wait this long.
2654 * I've changed this to 50ms, as it seems long enough.
2655 */
2656 TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_START_LINK );
2657
2658 } /* TLan_PhyReset */
2659
2660
2661
2662
2663 static void TLan_PhyStartLink( struct net_device *dev )
2664 {
2665 TLanPrivateInfo *priv = netdev_priv(dev);
2666 u16 ability;
2667 u16 control;
2668 u16 data;
2669 u16 phy;
2670 u16 status;
2671 u16 tctl;
2672
2673 phy = priv->phy[priv->phyNum];
2674 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name );
2675 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2676 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &ability );
2677
2678 if ( ( status & MII_GS_AUTONEG ) &&
2679 ( ! priv->aui ) ) {
2680 ability = status >> 11;
2681 if ( priv->speed == TLAN_SPEED_10 &&
2682 priv->duplex == TLAN_DUPLEX_HALF) {
2683 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0000);
2684 } else if ( priv->speed == TLAN_SPEED_10 &&
2685 priv->duplex == TLAN_DUPLEX_FULL) {
2686 priv->tlanFullDuplex = TRUE;
2687 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0100);
2688 } else if ( priv->speed == TLAN_SPEED_100 &&
2689 priv->duplex == TLAN_DUPLEX_HALF) {
2690 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2000);
2691 } else if ( priv->speed == TLAN_SPEED_100 &&
2692 priv->duplex == TLAN_DUPLEX_FULL) {
2693 priv->tlanFullDuplex = TRUE;
2694 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2100);
2695 } else {
2696
2697 /* Set Auto-Neg advertisement */
2698 TLan_MiiWriteReg( dev, phy, MII_AN_ADV, (ability << 5) | 1);
2699 /* Enablee Auto-Neg */
2700 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1000 );
2701 /* Restart Auto-Neg */
2702 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1200 );
2703 /* Wait for 4 sec for autonegotiation
2704 * to complete. The max spec time is less than this
2705 * but the card need additional time to start AN.
2706 * .5 sec should be plenty extra.
2707 */
2708 printk( "TLAN: %s: Starting autonegotiation.\n", dev->name );
2709 TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN );
2710 return;
2711 }
2712
2713 }
2714
2715 if ( ( priv->aui ) && ( priv->phyNum != 0 ) ) {
2716 priv->phyNum = 0;
2717 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2718 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2719 TLan_SetTimer( dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2720 return;
2721 } else if ( priv->phyNum == 0 ) {
2722 control = 0;
2723 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tctl );
2724 if ( priv->aui ) {
2725 tctl |= TLAN_TC_AUISEL;
2726 } else {
2727 tctl &= ~TLAN_TC_AUISEL;
2728 if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2729 control |= MII_GC_DUPLEX;
2730 priv->tlanFullDuplex = TRUE;
2731 }
2732 if ( priv->speed == TLAN_SPEED_100 ) {
2733 control |= MII_GC_SPEEDSEL;
2734 }
2735 }
2736 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, control );
2737 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tctl );
2738 }
2739
2740 /* Wait for 2 sec to give the transceiver time
2741 * to establish link.
2742 */
2743 TLan_SetTimer( dev, (4*HZ), TLAN_TIMER_FINISH_RESET );
2744
2745 } /* TLan_PhyStartLink */
2746
2747
2748
2749
2750 static void TLan_PhyFinishAutoNeg( struct net_device *dev )
2751 {
2752 TLanPrivateInfo *priv = netdev_priv(dev);
2753 u16 an_adv;
2754 u16 an_lpa;
2755 u16 data;
2756 u16 mode;
2757 u16 phy;
2758 u16 status;
2759
2760 phy = priv->phy[priv->phyNum];
2761
2762 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2763 udelay( 1000 );
2764 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2765
2766 if ( ! ( status & MII_GS_AUTOCMPLT ) ) {
2767 /* Wait for 8 sec to give the process
2768 * more time. Perhaps we should fail after a while.
2769 */
2770 if (!priv->neg_be_verbose++) {
2771 printk(KERN_INFO "TLAN: Giving autonegotiation more time.\n");
2772 printk(KERN_INFO "TLAN: Please check that your adapter has\n");
2773 printk(KERN_INFO "TLAN: been properly connected to a HUB or Switch.\n");
2774 printk(KERN_INFO "TLAN: Trying to establish link in the background...\n");
2775 }
2776 TLan_SetTimer( dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN );
2777 return;
2778 }
2779
2780 printk( "TLAN: %s: Autonegotiation complete.\n", dev->name );
2781 TLan_MiiReadReg( dev, phy, MII_AN_ADV, &an_adv );
2782 TLan_MiiReadReg( dev, phy, MII_AN_LPA, &an_lpa );
2783 mode = an_adv & an_lpa & 0x03E0;
2784 if ( mode & 0x0100 ) {
2785 priv->tlanFullDuplex = TRUE;
2786 } else if ( ! ( mode & 0x0080 ) && ( mode & 0x0040 ) ) {
2787 priv->tlanFullDuplex = TRUE;
2788 }
2789
2790 if ( ( ! ( mode & 0x0180 ) ) && ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) && ( priv->phyNum != 0 ) ) {
2791 priv->phyNum = 0;
2792 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2793 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2794 TLan_SetTimer( dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2795 return;
2796 }
2797
2798 if ( priv->phyNum == 0 ) {
2799 if ( ( priv->duplex == TLAN_DUPLEX_FULL ) || ( an_adv & an_lpa & 0x0040 ) ) {
2800 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB | MII_GC_DUPLEX );
2801 printk( "TLAN: Starting internal PHY with FULL-DUPLEX\n" );
2802 } else {
2803 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB );
2804 printk( "TLAN: Starting internal PHY with HALF-DUPLEX\n" );
2805 }
2806 }
2807
2808 /* Wait for 100 ms. No reason in partiticular.
2809 */
2810 TLan_SetTimer( dev, (HZ/10), TLAN_TIMER_FINISH_RESET );
2811
2812 } /* TLan_PhyFinishAutoNeg */
2813
2814 #ifdef MONITOR
2815
2816 /*********************************************************************
2817 *
2818 * TLan_phyMonitor
2819 *
2820 * Returns:
2821 * None
2822 *
2823 * Params:
2824 * dev The device structure of this device.
2825 *
2826 *
2827 * This function monitors PHY condition by reading the status
2828 * register via the MII bus. This can be used to give info
2829 * about link changes (up/down), and possible switch to alternate
2830 * media.
2831 *
2832 * ******************************************************************/
2833
2834 void TLan_PhyMonitor( struct net_device *dev )
2835 {
2836 TLanPrivateInfo *priv = netdev_priv(dev);
2837 u16 phy;
2838 u16 phy_status;
2839
2840 phy = priv->phy[priv->phyNum];
2841
2842 /* Get PHY status register */
2843 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &phy_status );
2844
2845 /* Check if link has been lost */
2846 if (!(phy_status & MII_GS_LINK)) {
2847 if (priv->link) {
2848 priv->link = 0;
2849 printk(KERN_DEBUG "TLAN: %s has lost link\n", dev->name);
2850 netif_carrier_off(dev);
2851 TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2852 return;
2853 }
2854 }
2855
2856 /* Link restablished? */
2857 if ((phy_status & MII_GS_LINK) && !priv->link) {
2858 priv->link = 1;
2859 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", dev->name);
2860 netif_carrier_on(dev);
2861 }
2862
2863 /* Setup a new monitor */
2864 TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2865 }
2866
2867 #endif /* MONITOR */
2868
2869
2870 /*****************************************************************************
2871 ******************************************************************************
2872
2873 ThunderLAN Driver MII Routines
2874
2875 These routines are based on the information in Chap. 2 of the
2876 "ThunderLAN Programmer's Guide", pp. 15-24.
2877
2878 ******************************************************************************
2879 *****************************************************************************/
2880
2881
2882 /***************************************************************
2883 * TLan_MiiReadReg
2884 *
2885 * Returns:
2886 * 0 if ack received ok
2887 * 1 otherwise.
2888 *
2889 * Parms:
2890 * dev The device structure containing
2891 * The io address and interrupt count
2892 * for this device.
2893 * phy The address of the PHY to be queried.
2894 * reg The register whose contents are to be
2895 * retrieved.
2896 * val A pointer to a variable to store the
2897 * retrieved value.
2898 *
2899 * This function uses the TLAN's MII bus to retrieve the contents
2900 * of a given register on a PHY. It sends the appropriate info
2901 * and then reads the 16-bit register value from the MII bus via
2902 * the TLAN SIO register.
2903 *
2904 **************************************************************/
2905
2906 static int TLan_MiiReadReg( struct net_device *dev, u16 phy, u16 reg, u16 *val )
2907 {
2908 u8 nack;
2909 u16 sio, tmp;
2910 u32 i;
2911 int err;
2912 int minten;
2913 TLanPrivateInfo *priv = netdev_priv(dev);
2914 unsigned long flags = 0;
2915
2916 err = FALSE;
2917 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2918 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2919
2920 if (!in_irq())
2921 spin_lock_irqsave(&priv->lock, flags);
2922
2923 TLan_MiiSync(dev->base_addr);
2924
2925 minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
2926 if ( minten )
2927 TLan_ClearBit(TLAN_NET_SIO_MINTEN, sio);
2928
2929 TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Start ( 01b ) */
2930 TLan_MiiSendData( dev->base_addr, 0x2, 2 ); /* Read ( 10b ) */
2931 TLan_MiiSendData( dev->base_addr, phy, 5 ); /* Device # */
2932 TLan_MiiSendData( dev->base_addr, reg, 5 ); /* Register # */
2933
2934
2935 TLan_ClearBit(TLAN_NET_SIO_MTXEN, sio); /* Change direction */
2936
2937 TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Clock Idle bit */
2938 TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2939 TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Wait 300ns */
2940
2941 nack = TLan_GetBit(TLAN_NET_SIO_MDATA, sio); /* Check for ACK */
2942 TLan_SetBit(TLAN_NET_SIO_MCLK, sio); /* Finish ACK */
2943 if (nack) { /* No ACK, so fake it */
2944 for (i = 0; i < 16; i++) {
2945 TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2946 TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2947 }
2948 tmp = 0xffff;
2949 err = TRUE;
2950 } else { /* ACK, so read data */
2951 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2952 TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2953 if (TLan_GetBit(TLAN_NET_SIO_MDATA, sio))
2954 tmp |= i;
2955 TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2956 }
2957 }
2958
2959
2960 TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Idle cycle */
2961 TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2962
2963 if ( minten )
2964 TLan_SetBit(TLAN_NET_SIO_MINTEN, sio);
2965
2966 *val = tmp;
2967
2968 if (!in_irq())
2969 spin_unlock_irqrestore(&priv->lock, flags);
2970
2971 return err;
2972
2973 } /* TLan_MiiReadReg */
2974
2975
2976
2977
2978 /***************************************************************
2979 * TLan_MiiSendData
2980 *
2981 * Returns:
2982 * Nothing
2983 * Parms:
2984 * base_port The base IO port of the adapter in
2985 * question.
2986 * dev The address of the PHY to be queried.
2987 * data The value to be placed on the MII bus.
2988 * num_bits The number of bits in data that are to
2989 * be placed on the MII bus.
2990 *
2991 * This function sends on sequence of bits on the MII
2992 * configuration bus.
2993 *
2994 **************************************************************/
2995
2996 static void TLan_MiiSendData( u16 base_port, u32 data, unsigned num_bits )
2997 {
2998 u16 sio;
2999 u32 i;
3000
3001 if ( num_bits == 0 )
3002 return;
3003
3004 outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
3005 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
3006 TLan_SetBit( TLAN_NET_SIO_MTXEN, sio );
3007
3008 for ( i = ( 0x1 << ( num_bits - 1 ) ); i; i >>= 1 ) {
3009 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
3010 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
3011 if ( data & i )
3012 TLan_SetBit( TLAN_NET_SIO_MDATA, sio );
3013 else
3014 TLan_ClearBit( TLAN_NET_SIO_MDATA, sio );
3015 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3016 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
3017 }
3018
3019 } /* TLan_MiiSendData */
3020
3021
3022
3023
3024 /***************************************************************
3025 * TLan_MiiSync
3026 *
3027 * Returns:
3028 * Nothing
3029 * Parms:
3030 * base_port The base IO port of the adapter in
3031 * question.
3032 *
3033 * This functions syncs all PHYs in terms of the MII configuration
3034 * bus.
3035 *
3036 **************************************************************/
3037
3038 static void TLan_MiiSync( u16 base_port )
3039 {
3040 int i;
3041 u16 sio;
3042
3043 outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
3044 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
3045
3046 TLan_ClearBit( TLAN_NET_SIO_MTXEN, sio );
3047 for ( i = 0; i < 32; i++ ) {
3048 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
3049 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3050 }
3051
3052 } /* TLan_MiiSync */
3053
3054
3055
3056
3057 /***************************************************************
3058 * TLan_MiiWriteReg
3059 *
3060 * Returns:
3061 * Nothing
3062 * Parms:
3063 * dev The device structure for the device
3064 * to write to.
3065 * phy The address of the PHY to be written to.
3066 * reg The register whose contents are to be
3067 * written.
3068 * val The value to be written to the register.
3069 *
3070 * This function uses the TLAN's MII bus to write the contents of a
3071 * given register on a PHY. It sends the appropriate info and then
3072 * writes the 16-bit register value from the MII configuration bus
3073 * via the TLAN SIO register.
3074 *
3075 **************************************************************/
3076
3077 static void TLan_MiiWriteReg( struct net_device *dev, u16 phy, u16 reg, u16 val )
3078 {
3079 u16 sio;
3080 int minten;
3081 unsigned long flags = 0;
3082 TLanPrivateInfo *priv = netdev_priv(dev);
3083
3084 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3085 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3086
3087 if (!in_irq())
3088 spin_lock_irqsave(&priv->lock, flags);
3089
3090 TLan_MiiSync( dev->base_addr );
3091
3092 minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
3093 if ( minten )
3094 TLan_ClearBit( TLAN_NET_SIO_MINTEN, sio );
3095
3096 TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Start ( 01b ) */
3097 TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Write ( 01b ) */
3098 TLan_MiiSendData( dev->base_addr, phy, 5 ); /* Device # */
3099 TLan_MiiSendData( dev->base_addr, reg, 5 ); /* Register # */
3100
3101 TLan_MiiSendData( dev->base_addr, 0x2, 2 ); /* Send ACK */
3102 TLan_MiiSendData( dev->base_addr, val, 16 ); /* Send Data */
3103
3104 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio ); /* Idle cycle */
3105 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3106
3107 if ( minten )
3108 TLan_SetBit( TLAN_NET_SIO_MINTEN, sio );
3109
3110 if (!in_irq())
3111 spin_unlock_irqrestore(&priv->lock, flags);
3112
3113 } /* TLan_MiiWriteReg */
3114
3115
3116
3117
3118 /*****************************************************************************
3119 ******************************************************************************
3120
3121 ThunderLAN Driver Eeprom routines
3122
3123 The Compaq Netelligent 10 and 10/100 cards use a Microchip 24C02A
3124 EEPROM. These functions are based on information in Microchip's
3125 data sheet. I don't know how well this functions will work with
3126 other EEPROMs.
3127
3128 ******************************************************************************
3129 *****************************************************************************/
3130
3131
3132 /***************************************************************
3133 * TLan_EeSendStart
3134 *
3135 * Returns:
3136 * Nothing
3137 * Parms:
3138 * io_base The IO port base address for the
3139 * TLAN device with the EEPROM to
3140 * use.
3141 *
3142 * This function sends a start cycle to an EEPROM attached
3143 * to a TLAN chip.
3144 *
3145 **************************************************************/
3146
3147 static void TLan_EeSendStart( u16 io_base )
3148 {
3149 u16 sio;
3150
3151 outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3152 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3153
3154 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3155 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3156 TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3157 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3158 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3159
3160 } /* TLan_EeSendStart */
3161
3162
3163
3164
3165 /***************************************************************
3166 * TLan_EeSendByte
3167 *
3168 * Returns:
3169 * If the correct ack was received, 0, otherwise 1
3170 * Parms: io_base The IO port base address for the
3171 * TLAN device with the EEPROM to
3172 * use.
3173 * data The 8 bits of information to
3174 * send to the EEPROM.
3175 * stop If TLAN_EEPROM_STOP is passed, a
3176 * stop cycle is sent after the
3177 * byte is sent after the ack is
3178 * read.
3179 *
3180 * This function sends a byte on the serial EEPROM line,
3181 * driving the clock to send each bit. The function then
3182 * reverses transmission direction and reads an acknowledge
3183 * bit.
3184 *
3185 **************************************************************/
3186
3187 static int TLan_EeSendByte( u16 io_base, u8 data, int stop )
3188 {
3189 int err;
3190 u8 place;
3191 u16 sio;
3192
3193 outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3194 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3195
3196 /* Assume clock is low, tx is enabled; */
3197 for ( place = 0x80; place != 0; place >>= 1 ) {
3198 if ( place & data )
3199 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3200 else
3201 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3202 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3203 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3204 }
3205 TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3206 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3207 err = TLan_GetBit( TLAN_NET_SIO_EDATA, sio );
3208 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3209 TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3210
3211 if ( ( ! err ) && stop ) {
3212 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* STOP, raise data while clock is high */
3213 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3214 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3215 }
3216
3217 return ( err );
3218
3219 } /* TLan_EeSendByte */
3220
3221
3222
3223
3224 /***************************************************************
3225 * TLan_EeReceiveByte
3226 *
3227 * Returns:
3228 * Nothing
3229 * Parms:
3230 * io_base The IO port base address for the
3231 * TLAN device with the EEPROM to
3232 * use.
3233 * data An address to a char to hold the
3234 * data sent from the EEPROM.
3235 * stop If TLAN_EEPROM_STOP is passed, a
3236 * stop cycle is sent after the
3237 * byte is received, and no ack is
3238 * sent.
3239 *
3240 * This function receives 8 bits of data from the EEPROM
3241 * over the serial link. It then sends and ack bit, or no
3242 * ack and a stop bit. This function is used to retrieve
3243 * data after the address of a byte in the EEPROM has been
3244 * sent.
3245 *
3246 **************************************************************/
3247
3248 static void TLan_EeReceiveByte( u16 io_base, u8 *data, int stop )
3249 {
3250 u8 place;
3251 u16 sio;
3252
3253 outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3254 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3255 *data = 0;
3256
3257 /* Assume clock is low, tx is enabled; */
3258 TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3259 for ( place = 0x80; place; place >>= 1 ) {
3260 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3261 if ( TLan_GetBit( TLAN_NET_SIO_EDATA, sio ) )
3262 *data |= place;
3263 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3264 }
3265
3266 TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3267 if ( ! stop ) {
3268 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* Ack = 0 */
3269 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3270 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3271 } else {
3272 TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); /* No ack = 1 (?) */
3273 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3274 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3275 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* STOP, raise data while clock is high */
3276 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3277 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3278 }
3279
3280 } /* TLan_EeReceiveByte */
3281
3282
3283
3284
3285 /***************************************************************
3286 * TLan_EeReadByte
3287 *
3288 * Returns:
3289 * No error = 0, else, the stage at which the error
3290 * occurred.
3291 * Parms:
3292 * io_base The IO port base address for the
3293 * TLAN device with the EEPROM to
3294 * use.
3295 * ee_addr The address of the byte in the
3296 * EEPROM whose contents are to be
3297 * retrieved.
3298 * data An address to a char to hold the
3299 * data obtained from the EEPROM.
3300 *
3301 * This function reads a byte of information from an byte
3302 * cell in the EEPROM.
3303 *
3304 **************************************************************/
3305
3306 static int TLan_EeReadByte( struct net_device *dev, u8 ee_addr, u8 *data )
3307 {
3308 int err;
3309 TLanPrivateInfo *priv = netdev_priv(dev);
3310 unsigned long flags = 0;
3311 int ret=0;
3312
3313 spin_lock_irqsave(&priv->lock, flags);
3314
3315 TLan_EeSendStart( dev->base_addr );
3316 err = TLan_EeSendByte( dev->base_addr, 0xA0, TLAN_EEPROM_ACK );
3317 if (err)
3318 {
3319 ret=1;
3320 goto fail;
3321 }
3322 err = TLan_EeSendByte( dev->base_addr, ee_addr, TLAN_EEPROM_ACK );
3323 if (err)
3324 {
3325 ret=2;
3326 goto fail;
3327 }
3328 TLan_EeSendStart( dev->base_addr );
3329 err = TLan_EeSendByte( dev->base_addr, 0xA1, TLAN_EEPROM_ACK );
3330 if (err)
3331 {
3332 ret=3;
3333 goto fail;
3334 }
3335 TLan_EeReceiveByte( dev->base_addr, data, TLAN_EEPROM_STOP );
3336 fail:
3337 spin_unlock_irqrestore(&priv->lock, flags);
3338
3339 return ret;
3340
3341 } /* TLan_EeReadByte */
3342
3343
3344
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